c++ - 试图阻止银行程序在选择交易后结束。 C++

Question

我制作了一个初学者银行程序，允许用户检查余额、存款和取款。但是，每次选择做某事的选项时，交易都会发生，我无法让程序“活着”，以便用户进行另一笔交易。我该如何解决这个问题？

#include <iostream>
#include <string>
using namespace std ;


int restart() ;
int main(){

float balance = 10.50 ;
float with ;
float deposit ;
string input ;


cout << "Welcome to your mom's Bank " << endl  ;

cout << "Your current BALANCE is: " << balance << "$" << endl ;
cout << "...how can we help you?" << endl ;
cout << endl ;
cout << "For a withdrawal, enter A. "<< endl ;
cout << "For a deposit, enter B. " << endl ;
cout << "For a balance check, enter C. " ;
cout << endl ;
cout << endl ;
getline(cin, input) ;

    if(input == "B")
            {
    cout << "How much would you like to deposit? " << endl ; 
    cout << "\t\t\t " ;
    cin >> deposit ;
    balance = balance + deposit ;

    cout << "You have deposited " <<deposit<< "$ " <<  endl ;
    cout << "Your current balance is " <<balance<< "$ " ;
    getline(cin , input) ;


    } 
        else if(input == "A")
        {
    cout << "How would you like to withdraw?" << endl ;
    cout << "\t\t\t" ;
    cin >> with ;

    balance = balance - with ;
    cout << "Your current balance is " <<balance<<"$ " ;
    getline(cin , input) ;


    } 
         else if(input == "C")
        {
    cout << "Your current balance is: " << balance << "$ " ;
    getline(cin , input) ;
}else
    {return -1 ; 
  } 



}

Answer 1

只需使用循环函数，例如 do..while.

string input ;
do{
cout << "Welcome to your mom's Bank " << endl  ;

最后……

}else
  {
                return -1 ; 
  } 
}while(1);
}