C Programming · Question 4 · Easy

What will be the output of the following C program?

#include <stdio.h>

int main(void) {
    int arr[] = {1, 2, 3, 4, 5};
    printf("%d", (int)(sizeof(arr) / sizeof(arr[0])));
    return 0;
}
  1. 20
  2. 4
  3. 5
  4. 1
Answer and explanation

Answer: C. 5

Explanation: sizeof(arr) is the size of the whole array (5 × sizeof(int)) and sizeof(arr[0]) is one element, so the quotient is the element count, 5.

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