一、描述 ：
计算1/1-1/2+1/3-1/4+1/5+…+1/99-1/100的值
二、代码：
#include<stdio.h>
#include<windows.h>
int main(){
int i
= 0;
int j
= 0;
double m
= 0;
double n
= 0;
double sum
= 0;
for (i
= 1; i
<= 99; i
+= 2){
m
+= 1.0 / i
;
}
for (j
= 2; j
<= 100; j
+= 2){
n
-= 1.0 / j
;
}
sum
= m
+ n
;
printf("sum is:%lf\n", sum
);
system("pause");
return 0;
}
三、运行结果：
