#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
int main()//1 - 1/2 + 1/3 - 1/4 + 1/5 +...+1/99 - 1/100
{
int i;
double sum = 0;
double tmp = 0;
int flag = 1;
for (i = 1; i <= 100; i++){
tmp = flag*1.0/i;//计算过程保存浮点型
flag *= -1;
sum += tmp;
}
printf("sum = %.11f\n", sum);
system("pause");
return 0;
}
求1 - 1/2 + 1/3 - 1/4 + 1/5 +...+1/99 - 1/100之和（和上个代码类似）
原文：https://www.cnblogs.com/Leafbud/p/12559493.html