问一道C语言编程题

2025-02-26 20:38:25
推荐回答(1个)
回答1:

#include

int main(void)
{
int a = 1;
int b = 1;
double sum = 0;
int n = 0;

printf("Enter n: ");

scanf("%d",&n);

for(int i=0;i {
sum+=b*(1.0)/a;

a = a+3;

b = (-1)*b;

}

printf("sum=%.3lf",sum);

}

看看可以不