Question

What is the size of int array pointer in C

Answer 1

#include <stdio.h>
 
int main(void)
{
    int arr[5] = {1, 2, 3, 4, 5};
    int *p = arr;
    
    printf("%llu\n", sizeof(int)); // size of array (5 x 4 bytes)
    printf("%llu\n", sizeof arr); // size of array (5 x 4 bytes)
    printf("%llu\n", sizeof p); // size of a pointer (8 bytes)
    
    return 0;
}

 
/*
run:

4
20
8

*/

 

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