C 练习实例25
C 语言教程
· 2019-02-21 18:12:04
题目：求1+2!+3!+...+20!的和。
程序分析：此程序只是把累加变成了累乘。
实例
// Created by www.codercto.com on 15/11/9.
// Copyright © 2015年 码农教程. All rights reserved.
//
#include <stdio.h>
int main()
{
int i;
long double sum,mix;
sum=0,mix=1;
for(i=1;i<=20;i++)
{
mix=mix*i;
sum=sum+mix;
}
printf("%Lf\n",sum);
}
以上实例输出结果为：
2561327494111820313.000000
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