计算1/1-1/2+1/3-1/4……..+1/99-1/100的值

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
int main()
{
float y = 0;
float i = 0;
float x = 0;
float j = 0;
for (i = 0; i <= 49; i++){
x = x - 1 / (i * 2 + 2);
y = y + 1 / (i * 2 + 1);
j = x + y;
}printf(“结果为:%f \n”, j);
system(“pause”);
return 0;
}