> #include<stdio.h>
> main()
> {
> float a[10],sum=0.0,n;
> int i=0,c;
> do
> {
> scanf("%f",&a[i]);\*这里我省去了判断是否在0.01~5.20之间，应该不是这里错吧*\
> 
> }while(a[i++]!=0.0);
> for(i=0;a[i]!=0;i++)
> { sum=0.0;
>   n=2;
>   c=0;
>   if(a[i]<=0.5)c=1;
>   else
>   {
>    do
>    {
>    sum=sum+1/n;
>    n=n+1;
>    c=c+1;
>    }while(sum<a[i]);
>   }
> printf("%d card(s)\n",c);
> }
> }