#include <stdio.h>

int main() {
    // declaring an array and a loop variable.
    int a[] = {10, 20, 30, 40}, i;

    // because 'a' behaves like an array and
    // stores an address, copy the address into
    // a pointer p.
    int *p = a;

    // use p to traverse the array a. the syntax
    // remains the same.
    for (i = 0; i < 4; i++) {
        printf("%d\n", p[i]);
    }

    return 0;
}