/* powers of first 10 numbers, stored in array-struct */

#include <stdio.h>

struct powers {
	int n1;
	int n2;
	int n3;
} pow[10];

int main(void)
{
	int i;

	for(i=1; i<=10; i++) {
		pow[i].n1 = i*i;
		pow[i].n2 = i*i*i;
		pow[i].n3 = i*i*i*i;
	}

	printf("Writing done.\n\n");

	for(i=1; i<=10; i++) {
		printf("%d | %d | %d\n", pow[i].n1, pow[i].n2, pow[i].n3);
	}

	return 0;
}

Writing done.

1 | 1 | 1
4 | 8 | 16
9 | 27 | 81
16 | 64 | 256
25 | 125 | 625
36 | 216 | 1296
49 | 343 | 2401
64 | 512 | 4096
81 | 729 | 6561
100 | 1000 | 10000