power函数

#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>

#include<iostream>

double power(double x, double y)
{
double z = 1;
while(y)
{
z *= x;
--y;

}
return z;

}
void main()
{
double x, y, z;
scanf("%lf %lf", &x, &y);

z = power(x, y);
 
 printf("%lf的%lf次方是%lf\n", x, y, z);