实验2-4-5 简单实现x的n次方 (10 分)

#include <stdio.h>

double mypow(double x, int n);

int main()
{
    double x;
    int n;

    scanf("%lf %d", &x, &n);
    printf("%f\n", mypow(x, n));

    system("pause");
    return 0;
}

/* 你的代码将被嵌在这里 */
double mypow(double x, int n) {
    double sum = 1;
    for (int i = 0; i < n; i++)
        sum *= x;//sum = sum * x;
    return sum;
}

一定要返回双精度sum(double sum);