一、流程图；

二、源代码；

# define _CRT_SECURE_NO_WARNINGS
# include <stdio.h>int main()
{//初始化变量值；int fenmu = 2;int result = 1;int fuhao = 1;//执行循环；while (fenmu < 100){//运算；fuhao = (-1) * fuhao;result = result + fuhao * (1 / fenmu);//循环值；fenmu++;}//打印结果；printf("%d\n", result);return 0;
}