> #include<stdio.h>
> #include<math.h>
> void main()
> {
> 	int n=0;
> 	float a=0,l;
> 	scanf("%f",&l);
> 	while (l>=0.01,l<=5.20){
> 	          

1/(n+1);恒等于0



> 		n++;
> 	}
> 	printf("%d card(s)\n",n);
> }