HDU 4788 Hard Disk Drive （2013成都H，水题） 进位换算

 #include <stdio.h>
 #include <algorithm>
 #include <string.h>
 #include<cmath>
 using namespace std;
 double a;
 char s[];
 int fun(char s[]) {
     if(strcmp(s,"B]") == )return ;
     if(strcmp(s,"KB]") == )return ;
     if(strcmp(s,"MB]") == )return ;
     if(strcmp(s,"GB]") == )return ;
     if(strcmp(s,"TB]") == )return ;
     if(strcmp(s,"PB]") == )return ;
     if(strcmp(s,"EB]") == )return ;
     if(strcmp(s,"ZB]") == )return ;
     if(strcmp(s,"YB]") == )return ;
 }
 int main() {
 //    freopen("in.txt","r",stdin);
     int t;
     scanf("%d",&t);
     int cas=;
     while(t--) {
         scanf("%lf[%s",&a,s);
         cas++;
         int num=fun(s);
         double ans=pow(1000.0,num)/pow(1024.0,num);
         ans=-ans;
         printf("Case #%d: %.2lf%%\n",cas,ans*);
     }
     return ;
 }