Question

How can an array be initialized with 0 in C?

1) By using a for loop to assign 0 to each element of the array
2) By using the memset() function to set all elements of the array to 0
3) By declaring the array with an initial value of 0
4) By using the calloc() function to allocate memory for the array and initialize it with 0

Answer 1

In C, an array can be initialized with 0 using the memset() function, declaring the array with an initial value of 0, or using the calloc() function.

Step-by-step explanation:

The correct options for initializing an array with 0 in C are:

2. By using the memset() function to set all elements of the array to 0
4. By declaring the array with an initial value of 0
6. By using the calloc() function to allocate memory for the array and initialize it with 0

For example:

int arr1[10]; memset(arr1, 0, sizeof(arr1)); int arr2[10] = {0}; int* arr3 = calloc(10, sizeof(int));