title
Understanding Arrays in C Programming | Edureka

description
Watch sample class recording: http://www.edureka.co/c-programming-datastructure-course?utm_source=youtube&utm_medium=referral&utm_campaign=understanding-arrays An array in C Programing Language can be defined as number of memory locations, each of which can store the same data type and which can be references through the same variable name. Topics covered in the video: 1.What is an Array 2.Initialization of Arrays 3.Example Program in C Edureka is a New Age e-learning platform that provides Instructor-Led Live, Online classes for learners who would prefer a hassle free and self paced learning environment, accessible from any part of the world. The topics related to ‘Understanding Arrays in C Programming’ have been extensively covered in our ‘C & Data Structures' course. For more information, please write back to us at sales@edureka.co Call us at US: 1800 275 9730 (toll free) or India: +91-8880862004

detail
{'title': 'Understanding Arrays in C Programming | Edureka', 'heatmap': [{'end': 1301.779, 'start': 1239.642, 'weight': 0.86}], 'summary': "Titled 'understanding arrays in c programming | edureka' covers key concepts such as array initialization, memory allocation, accessing, and passing arrays to functions in c, and demonstrates techniques for finding the largest number in an array, emphasizing the practical application of arrays in c programming.", 'chapters': [{'end': 163.768, 'segs': [{'end': 84.089, 'src': 'embed', 'start': 42.677, 'weight': 0, 'content': [{'end': 46.538, 'text': 'And then managing those variables is a much bigger task.', 'start': 42.677, 'duration': 3.861}, {'end': 51.06, 'text': 'The C has a way to declare a large collection of objects of similar types.', 'start': 47.479, 'duration': 3.581}, {'end': 52.041, 'text': "They're called arrays.", 'start': 51.3, 'duration': 0.741}, {'end': 54.522, 'text': "So let's say I want 100 integers.", 'start': 52.781, 'duration': 1.741}, {'end': 55.402, 'text': 'I can say int.', 'start': 54.762, 'duration': 0.64}, {'end': 60.804, 'text': 'variable name, in this case A, and then within square brackets, I can say 100.', 'start': 56.243, 'duration': 4.561}, {'end': 65.905, 'text': "In the example here, I've declared 20 integers, so I have int A 20.", 'start': 60.804, 'duration': 5.101}, {'end': 71.426, 'text': "And like I said, if this is a local variable, they'll all have junk values, so I may want to initialize them in the beginning itself.", 'start': 65.905, 'duration': 5.521}, {'end': 73.907, 'text': "So I've shown you the example right here on the slide.", 'start': 72.046, 'duration': 1.861}, {'end': 78.988, 'text': 'If I want to initialize them to particular values, I can initialize each one of them to a separate value.', 'start': 74.147, 'duration': 4.841}, {'end': 84.089, 'text': 'So when I say int A of five, I have five integer objects.', 'start': 79.608, 'duration': 4.481}], 'summary': 'In c, arrays allow declaring and managing a large collection of objects, such as 100 integers, with the ability to initialize individual values.', 'duration': 41.412, 'max_score': 42.677, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s42677.jpg'}, {'end': 137.343, 'src': 'embed', 'start': 109.112, 'weight': 2, 'content': [{'end': 113.289, 'text': "Now that I've initialized my array, Accessing each element is simple.", 'start': 109.112, 'duration': 4.177}, {'end': 115.511, 'text': 'The first element is a of 0.', 'start': 114.25, 'duration': 1.261}, {'end': 117.712, 'text': 'The second element is a of 1.', 'start': 115.511, 'duration': 2.201}, {'end': 122.495, 'text': 'So if I want to access the nth element, it will be a of n minus 1.', 'start': 117.712, 'duration': 4.783}, {'end': 126.338, 'text': 'Now please remember, here int a of 5 has 5 elements.', 'start': 122.495, 'duration': 3.843}, {'end': 131.181, 'text': "But if you want to access the fifth element, you'll be accessing a of 4.", 'start': 127.278, 'duration': 3.903}, {'end': 133.182, 'text': 'because the numbering starts from 0.', 'start': 131.181, 'duration': 2.001}, {'end': 134.602, 'text': 'So a of 0 is the first element.', 'start': 133.182, 'duration': 1.42}, {'end': 137.343, 'text': 'So a of 4 is the last element, which is the fifth element.', 'start': 134.662, 'duration': 2.681}], 'summary': 'Access array elements using index, with 5 elements starting from 0.', 'duration': 28.231, 'max_score': 109.112, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s109112.jpg'}], 'start': 3.755, 'title': 'Arrays in c programming', 'summary': 'Explains the concept of arrays in c programming, highlighting the need for arrays to store a large collection of objects of similar types, and the process of declaring, initializing, and accessing elements in an array.', 'chapters': [{'end': 163.768, 'start': 3.755, 'title': 'Arrays in c programming', 'summary': 'Explains the concept of arrays in c programming, highlighting the need for arrays to store a large collection of objects of similar types, and the process of declaring, initializing, and accessing elements in an array.', 'duration': 160.013, 'highlights': ['Arrays are used to declare a large collection of objects of similar types, addressing the need to store multiple values without declaring multiple variables.', 'The process of declaring an array involves specifying the data type and the number of elements within square brackets, such as int A[20] for 20 integers.', 'Initializing arrays to specific values can be done individually for each element or collectively by assigning a common value to all elements, simplifying the initialization process.', 'Accessing elements in an array is achieved by referencing the position within square brackets, with indexing starting from 0, where the nth element is accessed using a[n-1].']}], 'duration': 160.013, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s3755.jpg', 'highlights': ['Arrays are used to declare a large collection of objects of similar types, addressing the need to store multiple values without declaring multiple variables.', 'The process of declaring an array involves specifying the data type and the number of elements within square brackets, such as int A[20] for 20 integers.', 'Accessing elements in an array is achieved by referencing the position within square brackets, with indexing starting from 0, where the nth element is accessed using a[n-1].', 'Initializing arrays to specific values can be done individually for each element or collectively by assigning a common value to all elements, simplifying the initialization process.']}, {'end': 295.356, 'segs': [{'end': 227.532, 'src': 'embed', 'start': 168.772, 'weight': 0, 'content': [{'end': 171.615, 'text': 'Okay, so I want to have 10 different integers.', 'start': 168.772, 'duration': 2.843}, {'end': 176.459, 'text': 'So I can have int a of 10.', 'start': 172.356, 'duration': 4.103}, {'end': 178.501, 'text': 'And I want to initialize all of them to zero initially.', 'start': 176.459, 'duration': 2.042}, {'end': 180.423, 'text': "So I'm just going to say zero.", 'start': 179.062, 'duration': 1.361}, {'end': 187.947, 'text': 'So like I said, the first element here or the first integer is a of zero.', 'start': 183.584, 'duration': 4.363}, {'end': 196.233, 'text': 'So if I want to store the number 10 in the first integer, I can just say a of zero equal to 10.', 'start': 188.648, 'duration': 7.585}, {'end': 198.374, 'text': "It's very similar to accessing normal variables.", 'start': 196.233, 'duration': 2.141}, {'end': 204.198, 'text': 'Now if I want to access all of them, what you land up doing with arrays is generally use a for loop.', 'start': 199.415, 'duration': 4.783}, {'end': 206.78, 'text': "So let's say I want to accept 10 integers from the user.", 'start': 204.219, 'duration': 2.561}, {'end': 210.463, 'text': "So let's have an index int i.", 'start': 208.542, 'duration': 1.921}, {'end': 219.746, 'text': 'for i equals zero because it has to go from a of zero to a of nine.', 'start': 213.061, 'duration': 6.685}, {'end': 223.289, 'text': 'so i less than 10.', 'start': 219.746, 'duration': 3.543}, {'end': 224.85, 'text': 'i plus plus.', 'start': 223.289, 'duration': 1.561}, {'end': 227.532, 'text': 'so i have a loop which goes from 0 to 9.', 'start': 224.85, 'duration': 2.682}], 'summary': 'Using arrays to store 10 integers and initializing them to zero, then accessing and manipulating the elements using a for loop.', 'duration': 58.76, 'max_score': 168.772, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s168772.jpg'}], 'start': 168.772, 'title': 'Array initialization and accessing in c', 'summary': 'Explains the initialization of an array of 10 integers to zero and accessing each element using a for loop to store 10 numbers from the user, demonstrating the concept of array indexing and looping in c.', 'chapters': [{'end': 295.356, 'start': 168.772, 'title': 'Array initialization and accessing in c', 'summary': 'Explains the initialization of an array of 10 integers to zero and accessing each element using a for loop to store 10 numbers from the user, demonstrating the concept of array indexing and looping in c.', 'duration': 126.584, 'highlights': ['The concept of initializing an array of 10 integers to zero is explained, demonstrating the initialization process and the use of index notation to access individual elements.', 'The process of accessing and storing 10 numbers from the user into the array using a for loop is detailed, emphasizing the use of index variable and scanf function for input.', 'The explanation of the for loop iterating from 0 to 9 to access and store 10 numbers, highlighting the use of index variable and address of array elements for input, providing a clear understanding of array indexing and looping in C.']}], 'duration': 126.584, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s168772.jpg', 'highlights': ['The process of accessing and storing 10 numbers from the user into the array using a for loop is detailed, emphasizing the use of index variable and scanf function for input.', 'The explanation of the for loop iterating from 0 to 9 to access and store 10 numbers, highlighting the use of index variable and address of array elements for input, providing a clear understanding of array indexing and looping in C.', 'The concept of initializing an array of 10 integers to zero is explained, demonstrating the initialization process and the use of index notation to access individual elements.']}, {'end': 429.392, 'segs': [{'end': 358.174, 'src': 'embed', 'start': 295.456, 'weight': 0, 'content': [{'end': 297.798, 'text': "So we're going to display all the 10 numbers again on the screen.", 'start': 295.456, 'duration': 2.342}, {'end': 326.527, 'text': "Say printf numbers again for i equal to 0, i less than 10, i++, printf percentage d because it's still an integer, a of i.", 'start': 299.682, 'duration': 26.845}, {'end': 335.336, 'text': 'So just the way we needed a for loop to take input from the user, we again need a for loop to access every element of the array.', 'start': 328.43, 'duration': 6.906}, {'end': 338.678, 'text': 'There is no way to print an array with just one single printer statement.', 'start': 335.796, 'duration': 2.882}, {'end': 342.521, 'text': "A printf, you need to pass what kind of element you're printing.", 'start': 340.34, 'duration': 2.181}, {'end': 346.404, 'text': 'And we already learned that we have only a few basic error types.', 'start': 343.662, 'duration': 2.742}, {'end': 348.706, 'text': "If I'm printing an integer, it's %d.", 'start': 346.545, 'duration': 2.161}, {'end': 351.308, 'text': 'So I can print only one integer at a time using the printf.', 'start': 349.167, 'duration': 2.141}, {'end': 356.613, 'text': 'So if I want to print the entire array, I need to put it in the for loop and print one element at a time.', 'start': 351.909, 'duration': 4.704}, {'end': 358.174, 'text': "And that is what I'm doing here again.", 'start': 357.093, 'duration': 1.081}], 'summary': 'Display 10 numbers using a for loop to print each element one at a time.', 'duration': 62.718, 'max_score': 295.456, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s295456.jpg'}, {'end': 442.602, 'src': 'embed', 'start': 403.936, 'weight': 2, 'content': [{'end': 405.617, 'text': "So it's printing all the numbers next to each other.", 'start': 403.936, 'duration': 1.681}, {'end': 408.418, 'text': 'Put a backslash n.', 'start': 405.637, 'duration': 2.781}, {'end': 409.439, 'text': "Now let's compile and run.", 'start': 408.418, 'duration': 1.021}, {'end': 417.329, 'text': "Let's enter the 10 numbers.", 'start': 416.209, 'duration': 1.12}, {'end': 419.67, 'text': "I'll again go with 1, 2, 3, 4, 5, 55, 44, 33, 22, 100.", 'start': 418.069, 'duration': 1.601}, {'end': 420.73, 'text': 'And there you go.', 'start': 419.67, 'duration': 1.06}, {'end': 422.551, 'text': '1, 2, 3, 4, 5, 55, 44, 33, 22, and 100.', 'start': 420.79, 'duration': 1.761}, {'end': 424.211, 'text': "It's in the exact same order as we entered it.", 'start': 422.551, 'duration': 1.66}, {'end': 429.392, 'text': 'So we printed A of 0 first, which is 1, then A of 1, which is the number 2, and so on.', 'start': 424.251, 'duration': 5.141}, {'end': 442.602, 'text': 'So A of 9 was the number 100.', 'start': 429.412, 'duration': 13.19}], 'summary': 'The program printed the 10 entered numbers in the exact order as entered.', 'duration': 38.666, 'max_score': 403.936, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s403936.jpg'}], 'start': 295.456, 'title': 'Printing array elements with for loop', 'summary': 'Discusses the usage of a for loop to access and print all the elements of an array, emphasizing the need to print each element individually and the importance of using a backslash n to display each number on a new line.', 'chapters': [{'end': 429.392, 'start': 295.456, 'title': 'Printing array elements with for loop', 'summary': 'Discusses the usage of a for loop to access and print all the elements of an array, addressing the need to print each element individually and the importance of using a backslash n to display each number on a new line.', 'duration': 133.936, 'highlights': ['The importance of using a for loop to access and print every element of the array is emphasized.', 'The significance of using a backslash n to print each number on a new line is explained.', 'The process of using printf within a for loop to print each element of the array is detailed.']}], 'duration': 133.936, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s295456.jpg', 'highlights': ['The importance of using a for loop to access and print every element of the array is emphasized.', 'The process of using printf within a for loop to print each element of the array is detailed.', 'The significance of using a backslash n to print each number on a new line is explained.']}, {'end': 784.395, 'segs': [{'end': 461.433, 'src': 'embed', 'start': 429.412, 'weight': 2, 'content': [{'end': 442.602, 'text': 'So A of 9 was the number 100.', 'start': 429.412, 'duration': 13.19}, {'end': 448.045, 'text': 'Please remember that the size of the array is 10, which means it can store 10 integers.', 'start': 442.602, 'duration': 5.443}, {'end': 450.086, 'text': '0 to 9 is 10 integers.', 'start': 448.065, 'duration': 2.021}, {'end': 457.251, 'text': 'So if you try to access the a of nth element, or in this case, a of 10, it can lead to a segmentation fault.', 'start': 450.347, 'duration': 6.904}, {'end': 461.433, 'text': 'The C compiler will not give you an error if you try to access a of 10.', 'start': 457.711, 'duration': 3.722}], 'summary': 'Array a has 10 elements, with a[9] as 100. accessing a[10] can lead to a segmentation fault.', 'duration': 32.021, 'max_score': 429.412, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s429412.jpg'}, {'end': 557.35, 'src': 'embed', 'start': 526.98, 'weight': 0, 'content': [{'end': 533.983, 'text': "The only difference is because we want multiple objects of the same type, he's going to allocate contiguous memory of the same type.", 'start': 526.98, 'duration': 7.003}, {'end': 545.268, 'text': "So if I say int b of 5, he's going to allocate memory for 5 integers and they're all going to be contiguous.", 'start': 534.043, 'duration': 11.225}, {'end': 552.248, 'text': "So you're going to have So each integer takes up four bytes.", 'start': 545.748, 'duration': 6.5}, {'end': 557.35, 'text': "So for five integers, he's going to allocate four into five, which is 20 bytes.", 'start': 552.468, 'duration': 4.882}], 'summary': 'Memory allocation for 5 integers, each taking up 4 bytes, results in 20 bytes.', 'duration': 30.37, 'max_score': 526.98, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s526980.jpg'}, {'end': 737.526, 'src': 'embed', 'start': 703.203, 'weight': 1, 'content': [{'end': 705.645, 'text': 'To access any other element is simple arithmetic.', 'start': 703.203, 'duration': 2.442}, {'end': 712.71, 'text': 'So we know that in arrays, B of some particular index is an integer itself.', 'start': 707.006, 'duration': 5.704}, {'end': 714.792, 'text': 'So B of 4 is an integer.', 'start': 712.73, 'duration': 2.062}, {'end': 719.696, 'text': 'But what is B alone? If I just say B, B is the starting address.', 'start': 715.372, 'duration': 4.324}, {'end': 723.577, 'text': 'B by itself just says where this array starts.', 'start': 720.595, 'duration': 2.982}, {'end': 729.321, 'text': 'And he uses this starting address to access every other element in the array.', 'start': 724.778, 'duration': 4.543}, {'end': 737.526, 'text': 'And this is the exact reason why I said when I try to access B of 5, the compiler will not give me an error.', 'start': 730.722, 'duration': 6.804}], 'summary': 'Accessing array elements using starting address allows for easy arithmetic operations.', 'duration': 34.323, 'max_score': 703.203, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s703203.jpg'}, {'end': 798.92, 'src': 'embed', 'start': 768.933, 'weight': 3, 'content': [{'end': 770.453, 'text': 'He does not know the size of the array, etc.', 'start': 768.933, 'duration': 1.52}, {'end': 771.654, 'text': 'He just knows where the array starts.', 'start': 770.493, 'duration': 1.161}, {'end': 774.831, 'text': 'he does not know whether the array belongs to you.', 'start': 772.79, 'duration': 2.041}, {'end': 778.692, 'text': 'But when you start running the program, the operating system knows whether that particular memory belongs to you or not.', 'start': 774.871, 'duration': 3.821}, {'end': 784.395, 'text': 'So if you try to access a memory that does not belong to you, your program might just quit with an error.', 'start': 779.072, 'duration': 5.323}, {'end': 788.056, 'text': "So let's come back to the simple program that we've written.", 'start': 785.975, 'duration': 2.081}, {'end': 791.017, 'text': "Now let's see how do we pass arrays to functions.", 'start': 788.756, 'duration': 2.261}, {'end': 794.078, 'text': 'We know how to pass variables.', 'start': 793.038, 'duration': 1.04}, {'end': 796.059, 'text': "Now let's see how do we pass an array.", 'start': 794.739, 'duration': 1.32}, {'end': 798.92, 'text': "It's pretty much similar.", 'start': 797.099, 'duration': 1.821}], 'summary': 'The operating system determines memory ownership, causing errors if accessed improperly. passing arrays to functions is similar to passing variables.', 'duration': 29.987, 'max_score': 768.933, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s768933.jpg'}], 'start': 429.412, 'title': 'Array memory allocation and accessing arrays in c', 'summary': "Covers initialization and accessing of arrays, risk of accessing out-of-bounds elements, and memory allocation, with an example of 5 integers requiring 20 bytes of contiguous memory. it also explains accessing arrays in c, detailing the process of accessing elements using the starting address and simple arithmetic, as well as the potential risks of accessing memory locations outside the array's boundaries.", 'chapters': [{'end': 593.224, 'start': 429.412, 'title': 'Array memory allocation', 'summary': 'Covers the initialization and accessing of arrays, the risk of accessing out-of-bounds elements, and the memory allocation for arrays, with an example of 5 integers requiring 20 bytes of contiguous memory.', 'duration': 163.812, 'highlights': ['Arrays store multiple objects of the same type in contiguous memory, with 5 integers requiring 20 bytes.', 'Accessing out-of-bounds elements in an array can lead to segmentation faults and memory corruptions.', 'The example demonstrates that 5 integers in an array require 20 bytes of memory.']}, {'end': 784.395, 'start': 593.224, 'title': 'Accessing arrays in c', 'summary': "Explains how arrays are accessed in c, detailing the process of accessing elements using the starting address and simple arithmetic, as well as the potential risks of accessing memory locations outside the array's boundaries.", 'duration': 191.171, 'highlights': ['The program accesses array elements using the starting address and simple arithmetic, adding the index multiplied by the size of the data type to the starting address.', 'The chapter emphasizes that the program does not inherently know the size of the array or whether the array belongs to the program, with the operating system determining the validity of memory accesses.', "The potential risks of accessing memory locations outside the array's boundaries are highlighted, with the explanation that doing so could corrupt other variables' memory or result in program errors.", 'The simplicity of C programs in terms of memory management and the lack of need to store extensive information within the program are underscored, with the emphasis on the program only needing to know the starting address of the array to access its elements.']}], 'duration': 354.983, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s429412.jpg', 'highlights': ['Arrays store multiple objects of the same type in contiguous memory, with 5 integers requiring 20 bytes.', 'The program accesses array elements using the starting address and simple arithmetic.', 'Accessing out-of-bounds elements in an array can lead to segmentation faults and memory corruptions.', "The potential risks of accessing memory locations outside the array's boundaries are highlighted."]}, {'end': 1015.167, 'segs': [{'end': 846.936, 'src': 'embed', 'start': 814.161, 'weight': 0, 'content': [{'end': 821.528, 'text': "so this function func, or let's call it display, the function display is going to display all the elements of the array.", 'start': 814.161, 'duration': 7.367}, {'end': 826.513, 'text': "so I say void display, and it's going to take an array.", 'start': 821.528, 'duration': 4.985}, {'end': 839.774, 'text': 'so I just say this So now, within the function, if I want to display the array or all the elements of the array, I need an index int.', 'start': 826.513, 'duration': 13.261}, {'end': 846.936, 'text': 'i need a loop, for i equal to 0, i less than now.', 'start': 839.774, 'duration': 7.162}], 'summary': "Function 'display' shows all array elements using a loop.", 'duration': 32.775, 'max_score': 814.161, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s814161.jpg'}, {'end': 995.23, 'src': 'embed', 'start': 942.048, 'weight': 1, 'content': [{'end': 947.533, 'text': "I'm just going to say that's 10 numbers.", 'start': 942.048, 'duration': 5.485}, {'end': 949.535, 'text': "And he's displaying all of them.", 'start': 948.434, 'duration': 1.101}, {'end': 954.92, 'text': "Now let's say in display, I say display A comma 5.", 'start': 950.376, 'duration': 4.544}, {'end': 956.862, 'text': "He's going to display just 5 numbers.", 'start': 954.92, 'duration': 1.942}, {'end': 968.085, 'text': '1, 2, 3, 4, 5.', 'start': 966.605, 'duration': 1.48}, {'end': 974.712, 'text': 'As you can see, there is no way for the C compiler to know how big is the array or how many elements are there.', 'start': 968.087, 'duration': 6.625}, {'end': 977.855, 'text': 'So whenever we are writing programs, we need to take care of all of that.', 'start': 975.133, 'duration': 2.722}, {'end': 980.938, 'text': 'So when I want to display the entire array, I have no idea where the array ends.', 'start': 978.235, 'duration': 2.703}, {'end': 986.863, 'text': 'So I need to either hard code it saying, okay, I know in this case there are 10 elements, so I could have had the for loop from 1 to 10.', 'start': 981.398, 'duration': 5.465}, {'end': 989.825, 'text': 'Or if I want to write a generic function which anybody can use,', 'start': 986.863, 'duration': 2.962}, {'end': 995.23, 'text': 'I say pass me the array and pass me the number of elements in the array that you want to display.', 'start': 990.646, 'duration': 4.584}], 'summary': 'C compiler cannot determine array size, need to specify elements for display.', 'duration': 53.182, 'max_score': 942.048, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s942048.jpg'}], 'start': 785.975, 'title': 'Passing arrays to functions', 'summary': 'Discusses techniques for passing arrays to functions, emphasizing the need for a generic function to handle arrays of varying sizes and the use of loops to iterate through array elements in c. it also demonstrates the process of calling a function to display specific elements of the array while emphasizing the importance of specifying the number of elements in the array.', 'chapters': [{'end': 866.43, 'start': 785.975, 'title': 'Passing arrays to functions', 'summary': 'Discusses how to pass arrays to functions, emphasizing the need for a generic function to handle arrays of varying sizes and the use of loops to iterate through array elements.', 'duration': 80.455, 'highlights': ['The function display is designed to handle arrays of varying sizes, ensuring that it can display the entire array regardless of the number of elements present.', 'The use of a loop with a generic condition (i.e., i < array length) emphasizes the need for a generic function to handle arrays of varying sizes.']}, {'end': 1015.167, 'start': 867.23, 'title': 'Passing arrays to functions', 'summary': 'Demonstrates how to pass arrays to functions in c, emphasizing the need for specifying the number of elements in the array, and highlights the process of calling a function to display specific elements of the array.', 'duration': 147.937, 'highlights': ['The chapter emphasizes the need to specify the number of elements in the array when passing arrays to functions in C, showcasing the process of calling a function to display specific elements of the array.', 'The function to display the array elements eliminates the need for a for loop, simplifying the code and allowing for versatility in displaying different subsets of the array.', 'The C compiler lacks the capability to determine the size of an array or the number of elements, necessitating the explicit specification of the array size when passing arrays to functions.']}], 'duration': 229.192, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s785975.jpg', 'highlights': ['The function display is designed to handle arrays of varying sizes, ensuring that it can display the entire array regardless of the number of elements present.', 'The use of a loop with a generic condition (i.e., i < array length) emphasizes the need for a generic function to handle arrays of varying sizes.', 'The chapter emphasizes the need to specify the number of elements in the array when passing arrays to functions in C, showcasing the process of calling a function to display specific elements of the array.', 'The function to display the array elements eliminates the need for a for loop, simplifying the code and allowing for versatility in displaying different subsets of the array.', 'The C compiler lacks the capability to determine the size of an array or the number of elements, necessitating the explicit specification of the array size when passing arrays to functions.']}, {'end': 1338.309, 'segs': [{'end': 1041.045, 'src': 'embed', 'start': 1015.287, 'weight': 2, 'content': [{'end': 1020.428, 'text': 'You do not need to specify any particular size within this because they can send any array they want of any size.', 'start': 1015.287, 'duration': 5.141}, {'end': 1028.589, 'text': "So now we've learned an important concept in C called arrays.", 'start': 1025.749, 'duration': 2.84}, {'end': 1031.73, 'text': 'To have a large collection of similar objects.', 'start': 1029.31, 'duration': 2.42}, {'end': 1038.571, 'text': "we define arrays and we've seen how to use these arrays, how to access each and every element in the array, how to pass an array to a function.", 'start': 1031.73, 'duration': 6.841}, {'end': 1041.045, 'text': "So let's write a simple program.", 'start': 1039.723, 'duration': 1.322}], 'summary': 'Introduction to arrays in c, enabling storage and manipulation of large collections of similar objects.', 'duration': 25.758, 'max_score': 1015.287, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s1015287.jpg'}, {'end': 1087.407, 'src': 'embed', 'start': 1061.341, 'weight': 0, 'content': [{'end': 1067.086, 'text': 'The function largest should accept an array and it should return what is the largest number.', 'start': 1061.341, 'duration': 5.745}, {'end': 1069.368, 'text': "Let's see how we're going to do that.", 'start': 1068.347, 'duration': 1.021}, {'end': 1072.837, 'text': "So let's maintain the same program.", 'start': 1071.516, 'duration': 1.321}, {'end': 1076.139, 'text': 'We have a function called display.', 'start': 1074.938, 'duration': 1.201}, {'end': 1080.822, 'text': "It's going to display all the elements which we may not use in this program.", 'start': 1076.199, 'duration': 4.623}, {'end': 1087.407, 'text': 'Now we have the initial for loop which is going to accept 10 elements.', 'start': 1083.724, 'duration': 3.683}], 'summary': "The function 'largest' should return the largest number from an array of 10 elements.", 'duration': 26.066, 'max_score': 1061.341, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s1061341.jpg'}, {'end': 1167.031, 'src': 'embed', 'start': 1142.09, 'weight': 3, 'content': [{'end': 1151.875, 'text': "So let's have a temporary variable, or let's call it int largest equal to the first element.", 'start': 1142.09, 'duration': 9.785}, {'end': 1156.127, 'text': "So I'm going to say arr of 0.", 'start': 1151.915, 'duration': 4.212}, {'end': 1158.588, 'text': 'I cannot call largest as just zero.', 'start': 1156.127, 'duration': 2.461}, {'end': 1167.031, 'text': "It's not right to initialize it to just zero, because if I say larger equal to zero and if the array arr has only negative numbers,", 'start': 1159.068, 'duration': 7.963}], 'summary': 'Initializing largest variable to the first element of array.', 'duration': 24.941, 'max_score': 1142.09, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s1142090.jpg'}, {'end': 1301.779, 'src': 'heatmap', 'start': 1239.642, 'weight': 0.86, 'content': [{'end': 1244.143, 'text': 'So once we finished this for loop in the variable largest, we will have the largest number.', 'start': 1239.642, 'duration': 4.501}, {'end': 1246.864, 'text': 'All we need to do is return the largest number.', 'start': 1245.084, 'duration': 1.78}, {'end': 1249.585, 'text': 'So you say return largest.', 'start': 1246.944, 'duration': 2.641}, {'end': 1267.594, 'text': 'This simple, right? Now from main, all we need to do is call the function largest with the array in RKA and number of elements is 10.', 'start': 1252.906, 'duration': 14.688}, {'end': 1270.097, 'text': 'And finally, whatever is returned, we need to print it.', 'start': 1267.594, 'duration': 2.503}, {'end': 1286.574, 'text': 'So we just say printf %t largest n.', 'start': 1270.557, 'duration': 16.017}, {'end': 1286.975, 'text': 'There we go.', 'start': 1286.574, 'duration': 0.401}, {'end': 1289.638, 'text': "Now let's save this program.", 'start': 1287.475, 'duration': 2.163}, {'end': 1301.779, 'text': 'Compile No errors or warnings.', 'start': 1299.338, 'duration': 2.441}], 'summary': 'The program finds the largest number in an array and prints it.', 'duration': 62.137, 'max_score': 1239.642, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s1239642.jpg'}, {'end': 1338.309, 'src': 'embed', 'start': 1302.18, 'weight': 5, 'content': [{'end': 1306.222, 'text': 'Run We need to enter 10 numbers.', 'start': 1302.18, 'duration': 4.042}, {'end': 1308.103, 'text': "I'm just going to go with 1, 2, 3, 4, 5, 6, 7, 8, 9, 0.", 'start': 1306.242, 'duration': 1.861}, {'end': 1308.744, 'text': 'The largest is 9.', 'start': 1308.103, 'duration': 0.641}, {'end': 1310.204, 'text': "Let's try a different example.", 'start': 1308.744, 'duration': 1.46}, {'end': 1320.559, 'text': "Let's give negative numbers now.", 'start': 1319.298, 'duration': 1.261}, {'end': 1337.268, 'text': 'Minus 1, minus 2, minus 3, minus 4, minus 5, minus 6, minus 7, minus 8, minus 9, and minus 100.', 'start': 1320.659, 'duration': 16.609}, {'end': 1338.309, 'text': 'The largest would be minus 1.', 'start': 1337.268, 'duration': 1.041}], 'summary': 'Finding the largest number in a set of 10 numbers, including negative values.', 'duration': 36.129, 'max_score': 1302.18, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s1302180.jpg'}], 'start': 1015.287, 'title': 'Finding largest number in c arrays', 'summary': 'Explains arrays in c and writing a function to find the largest number in an array, demonstrating flexibility to handle arrays of any size. it also showcases examples of finding largest numbers in arrays, resulting in 9 for positive numbers and -1 for negative numbers.', 'chapters': [{'end': 1140.288, 'start': 1015.287, 'title': 'C arrays and finding largest number', 'summary': 'Explains the concept of arrays in c, demonstrating how to use and access elements in an array, and then focuses on writing a function to find the largest number in a given array, emphasizing the flexibility of the function to handle arrays of any size.', 'duration': 125.001, 'highlights': ["The function largest should accept an array and return the largest number, regardless of the array's size.", 'Demonstrates the process of finding the largest number in an array by iterating through the elements and comparing them to the assumed largest number.', 'Explanation of the concept of arrays in C, including the purpose of defining arrays to store similar objects and how to access each element in the array.']}, {'end': 1338.309, 'start': 1142.09, 'title': 'Finding the largest number in an array', 'summary': 'Demonstrates how to find the largest number in an array using a simple algorithm, and showcases the process with examples of positive and negative numbers, resulting in 9 and -1 as the largest numbers respectively.', 'duration': 196.219, 'highlights': ["The algorithm initializes the 'largest' variable to the first element of the array to avoid assuming zero as the largest value in the case of negative numbers.", "It iterates through the array to compare each element with the 'largest' variable and updates 'largest' if the element is greater, resulting in the largest number.", 'The chapter provides examples of finding the largest number in arrays containing positive and negative numbers, resulting in 9 and -1 as the largest numbers respectively.']}], 'duration': 323.022, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0EgpeYB115s/pics/0EgpeYB115s1015287.jpg', 'highlights': ["The function largest should accept an array and return the largest number, regardless of the array's size.", 'Demonstrates the process of finding the largest number in an array by iterating through the elements and comparing them to the assumed largest number.', 'Explanation of the concept of arrays in C, including the purpose of defining arrays to store similar objects and how to access each element in the array.', "The algorithm initializes the 'largest' variable to the first element of the array to avoid assuming zero as the largest value in the case of negative numbers.", "It iterates through the array to compare each element with the 'largest' variable and updates 'largest' if the element is greater, resulting in the largest number.", 'The chapter provides examples of finding the largest number in arrays containing positive and negative numbers, resulting in 9 and -1 as the largest numbers respectively.']}], 'highlights': ['Arrays store multiple objects of the same type in contiguous memory, with 5 integers requiring 20 bytes.', 'The function display is designed to handle arrays of varying sizes, ensuring that it can display the entire array regardless of the number of elements present.', 'The process of declaring an array involves specifying the data type and the number of elements within square brackets, such as int A[20] for 20 integers.', "The function largest should accept an array and return the largest number, regardless of the array's size.", 'Accessing out-of-bounds elements in an array can lead to segmentation faults and memory corruptions.', "The potential risks of accessing memory locations outside the array's boundaries are highlighted.", 'Accessing elements in an array is achieved by referencing the position within square brackets, with indexing starting from 0, where the nth element is accessed using a[n-1].', 'The process of using printf within a for loop to print each element of the array is detailed.', 'The concept of initializing an array of 10 integers to zero is explained, demonstrating the initialization process and the use of index notation to access individual elements.', 'The process of using a for loop to access and print every element of the array is emphasized.']}