C语言题目：输入一个正整数n,计算1-1/4+1/7-1/10+1/13-1/16+…的前n 项之和,输出时保留3位#includeint main(void){double sum,flag,d;int n,i;sum=0;d=1;flag=1;printf("Enter n:");scanf("%d",&n);for(i=1;i

C语言题目：输入一个正整数n,计算1-1/4+1/7-1/10+1/13-1/16+…的前n 项之和,输出时保留3位#includeint main(void){double sum,flag,d;int n,i;sum=0;d=1;flag=1;printf("Enter n:");scanf("%d",&n);for(i=1;i
C语言题目：输入一个正整数n,计算1-1/4+1/7-1/10+1/13-1/16+…的前n 项之和,输出时保留3位
#include
int main(void)
{
double sum,flag,d;
int n,i;
sum=0;
d=1;
flag=1;
printf("Enter n:");
scanf("%d",&n);
for(i=1;i

C语言题目：输入一个正整数n,计算1-1/4+1/7-1/10+1/13-1/16+…的前n 项之和,输出时保留3位#includeint main(void){double sum,flag,d;int n,i;sum=0;d=1;flag=1;printf("Enter n:");scanf("%d",&n);for(i=1;i
printf("sum=%.3f",&sum);
=>printf("sum=%.3f",sum);