Basic C Programming - Array

What is the syntax for declaring an array in C?

• data_type array_name[array_size];

• array_name data_type[array_size];

• data_type array_name[array_length];

• array_name[array_size] data_type;

How can you initialize an array in C?

• int arr[] = {1, 2, 3, 4, 5};

• int arr[5] = {1, 2, 3, 4, 5};

• int arr[5] = {1, 2, 3, 4, 5};

• int arr[5] = {1, 2, 3};

How do you access the third element in an array named 'arr'?

• arr[3]

• arr{2}

• arr[2]

• arr(2)

Explain how you can manipulate an array in C.

• You can manipulate an array in C by accessing elements using index, modifying values, iterating with loops, sorting with qsort, and performing operations like adding or removing elements.

• Manipulating an array in C involves using only built-in functions without any custom logic

• To manipulate an array in C, you must always know the exact number of elements in advance

• You can manipulate an array in C by converting it to a string and then back to an array

What is a multi-dimensional array in C?

• An array that can only store one type of data in C

• An array that can only have one dimension in C

• An array that can dynamically change size in C

• An array of arrays in C, where each element in the main array is itself an array.

How can you sort an array in C?

• Use the qsort() function from stdlib.h library.

• Use a custom sorting algorithm without any library functions.

• Use the sort() function from string.h library.

• Use the bubble sort algorithm from math.h library.

Discuss the difference between declaring and initializing an array.

• Declaring an array is defining the array variable, while initializing an array is assigning values to the array elements.

• Declaring an array is assigning values to the array elements, while initializing an array is defining the array size.

• Declaring an array is assigning values to the array elements, while initializing an array is defining the array variable.

• Declaring an array is defining the array size, while initializing an array is assigning values to the array elements.

Explain the concept of array indexing in C.

• In C, array indexing is done by specifying the array name followed by square brackets containing the index of the element to access, like arr[index].

• Array indexing in C is done by specifying the index first, followed by the array name, like index[arr].

• Array indexing in C is not supported and must be done manually for each element.

• In C, array indexing is done by using parentheses instead of square brackets, like arr(index).

What are the advantages of using arrays in programming?

• Arrays are difficult to work with and understand.

• Arrays are limited in size and cannot store a large amount of data.

• Arrays help in organizing and manipulating data efficiently.

• Arrays make programming slower and less efficient.

How can you create a 2D array in C?

• int arr[2][2];

• int arr[][] = new int[3][3];

• int arr[3][3];

• int arr[3,3];