转账函数.cpp

大一时候学C++的大作业,独立开发的一个模拟银行系统,还存在点缺陷,不过相信对初学者来说还有帮助的,里面有作业报告和工作日记.

#include"head.h"
/////////////////////////转账/////////////////////////
void operate::tranform()
{fstream f;
memberdata tf;
f.seekg(0,ios::end);
long posEnd=f.tellp();
int a;
int choice;
cout<<"请输入对方的用户名: ";
char name[40];
cin>>name;
f.seekg(0,ios::beg);
do 
{f.read((char*)&tf,sizeof(memberdata));
}while( f.tellp()!=posEnd);
a=strcmp(tf.Name,name);
if(a==0)
{int money;
  cout<<"请选择要转的币种: \n";
  cout<<"1: RMB\n"
	  <<"2: US$\n"
	  <<"3: HK$\n"
	  <<"0: 返回"<<endl;
  
  cin>>choice;
  switch(choice)
  {case 0:return;
  case 1:{
	     cout<<"请输入要转的金额: RMB";
         cin>>setfill('RMB')>>money;
         cout<<"1:确认"<<setw(20)<<"2: 取消"<<endl;
	     cin>>choice;  
	     switch(choice)
		{
           case 1: {tf.cash-=money;
	        f.write((char*)&tf.cash,sizeof(memberdata));
			break;
				  }
           case 2:return;
			   default:cout<<"ERROR...."<<endl;
		}
	   break; }
  case 2:{
	      cout<<"请输入要转的金额: US$";
		  cin>>setfill('US$')>>money;
          cout<<"1:确认"<<setw(20)<<"2: 取消"<<endl;
	cin>>choice;  
	switch(choice)
		{
            case 1: {tf.cash1-=money;
	        f.write((char*)&tf.cash1,sizeof(memberdata));
					  }break;
            case 2:return;
				default:cout<<"ERROR...."<<endl;
		}
		break; }
 
  case 3:{
	     cout<<"请输入要转的金额: HK$";
         cin>>setfill('HK$')>>money;
         cout<<"1:确认"<<setw(20)<<"2: 取消"<<endl;
	     cin>>choice;  
	     switch(choice)
		{
           case 1: {tf.cash2-=money;
	        f.write((char*)&tf.cash2,sizeof(memberdata));
			break;
				  }
           case 2:return;
			   default:cout<<"ERROR...."<<endl;
		}
		 break;}
  
  
  default:cout<<"ERROR...."<<endl;

}





}

}