#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 = 2;
	n = 4;
	y = power(x,n);
	printf("%dの%d乗は%d",x,n,y);
	return 0;
}