# include<stdio.h>
int main()
{
int a,b,c,h;
a=1;
b=1;
c=2;
while(c<100)
{
a=-1*a;
h=a*1/c;
b=b+h;
c=c+1;
}
printf("%lf",b);
return 0;
}
这是啥错误？