1. 

If the size of integer is 4bytes, What will be the output of the program? 

#include<stdio.h>

int main()
{
    int arr[] = {12, 13, 14, 15, 16};
    printf("%d, %d, %d\n", sizeof(arr), sizeof(*arr), sizeof(arr[0]));
    return 0;
}


A. 10, 2, 4
B. 20, 4, 4
C. 16, 2, 2
D. 20, 2, 2

Answer: Option B

Explanation:

The array elements are 5 each of size 4 bytes so it is 20.

Where as second is size of addres not the individual element so the size of int as declared is 4 so it is 4.

Then the final one is size of individual element i.e. size of first array element so it is 4.