#include <iostream>
using namespace std;
unsigned int count_code;
float count_meney = 0;
float count_rat = 0;
float del = 0;
void error(){
 cout<<"无效操作!"<<endl;
}
void show(){
  int b;
  count_meney -= del;
  cout <<"帐号："<<count_code<<endl;
  cout <<"余额："<<count_meney<<endl;
  cout <<"利息: "<<count_rat<<endl;
  cout <<"月后余额为："<<count_meney+count_meney*count_rat<<endl;
  cout <<"返回主菜单请按0"<<endl;
  cin >> b;
}
int main(void){
 int a;
 //menu
 for(;;){
  cout<<"     迷你银行系统     "<<endl;
  cout<<"----------------------"<<endl;
  cout<<"①创建count"<<endl;
  cout<<"②存款"<<endl;
  cout<<"③取款"<<endl;
  cout<<"④调整利息"<<endl;
  cout<<"⑤显示账户信息"<<endl;
  cout<<"Exit:please enter 0 key"<<endl;
  cout<<"----------------------"<<endl;
  cout<<"\a请选择：";
  cin>>a;
  switch (a){
  case 0: return 0;
  case 1:for(;;)
   {cout<<"请输入需要创建的帐号名：(数字)"<<endl;
      cin>>count_code;
      if(count_code)
       {cout<<"Create Success!"<<endl;
     break;
       }
      else error();
   }
       break;
  case 2:cout<<"请输入需要存入金额："<<endl;
      cin>>count_meney;
    break;
  case 3:cout<<"请输入需要取款金额:"<<endl;
    cin>>del;
    break;
  case 4:cout<<"请输入调整利率:(小于100%)"<<endl;
    cin>>count_rat;
    break;
  case 5:cout<<"用户信息如下："<<endl;
      show();
    break;
  }
 }
 return 0;

}

创建帐号时，输入字符或字符串能报错。怎么修改主程序。