这是题目
以下为题目给的模板
#include "stdio.h"
#include "math.h"
#include "stdlib.h"
double fun(double x)
{
/begin///这里开始填空
double s=0.0;
double k=0.0,b,c;
b=pow(-1,k-1);
c=b*(1/(2*k-1));
while(1)
{
s=s+c;
if(fabs(c)<x)
break;
k++;
}
return s;
}
/end/
int main()
{
void NONO( );//函数声明
double x,sum;
printf("Enter x:\n");
scanf("%lf",&x);
sum=fun(x);
printf("sum=%.4f\n",sum);
NONO( );
return 0;
}
void NONO( )
{ FILE *fr,*fw;
int i;
double x;
fr=fopen("E:\exam\999999\PROGIN2.DAT","r");
fw=fopen("E:\exam\999999\PROGOUT2.DAT","w");
for(i=1;i<=5;i++)
{ fscanf(fr,"%lf",&x);
fprintf(fw,"s=%.4f\n",fun(x));}
fclose(fr);
fclose(fw);
}
运行无法结束,求解怎么改