#include <stdio.h>

int power(int a, int b){
    int c = 1;
    while (b-- > 0)
        c *= a;

    return c;
}

int main(void) {
    int x,n,y;
    x = 3;
    n = 2;
    y = power(x,n);
    printf("%d の %d 乗は %d",x,n,y);

	return 0;
}