以下是我的计划的完整代码和下面提到的问题。
此代码来自我的“虚拟ATM机”程序，该程序处理客户存款，核对余额以及从其帐户中提取资金。当我存钱时，它显示它已存入..但“customer_actions（）”是客户的主菜单，当我返回该屏幕并选择检查余额的选项时，它显示为零。
这意味着未从上一个函数更新值。当用户输入存款金额时，我会更新它：/
问题在于存款功能，我猜测。但我发布了完整的程序供您处理。
非常感谢你们：）
HEADER FILE：
#ifndef bank
#define bank
using namespace std;
class bankAccount
{
public:
int accNo;
int password;
double balance;
double withdrawamt;
double depositamt;
char name[20];
char address[40];
char username[10];
public:
double checkbalance();
double deposit();
double withdraw();
/* public:
bankAccount()
{
balance = 0;
}
*/
};
#endif
到目前为止完成整个计划：
#include <stdlib.h>
#include <conio.h>
#include <iostream>
#include <fstream>
#include "bank.h"
using namespace std;
using std::string;
int logincheck (int ,int );
double checkbal (double );
int mainmenu(int );
int customer_func();
int officer_func();
int enroll();
int customer_actions();
main() {
double balance = 0, deposit = 0, withdraw = 0;
int atmno;
bankAccount b;
system("cls");
cout << endl;
cout << "**************** Please select an ATM to continue ********************* \n"<<endl;;
cout << "----------------------------------------------------------------------- \n";
cout << "| ATM 1 ATM 2 ATM 3 | \n";
cout << "----------------------------------------------------------------------- \n"<<endl;
cout << "Enter ATM number: ";
cin >> atmno;
switch(atmno)
{
case 1: mainmenu(atmno); break;
case 2: mainmenu(atmno); break;
case 3: mainmenu(atmno); break;
}
}
int mainmenu(int atmno)
{
int mainselection;
system("cls");
// Menu
cout << " ----------------------------------------------------------------------- \n";
cout << "| ATM Booth: " << atmno << " | \n";
cout << " ----------------- ----------------- ----------------- ----------------- \n";
cout << " Please Select option to continue: \n" << endl << endl;
cout << "1) Customer Login : Press 1" << endl;
cout << "2) Officer Login : Press 2" << endl;
cout << "\nEnter option: ";
cin >> mainselection;
switch(mainselection)
{
case 1: customer_actions(); break;
case 2: officer_func(); break;
}
}
int customer_func()
{
int usr;
int pss;
bankAccount b;
system("cls");
cout << " ----------------------------------------------------------------------- \n";
cout << "| AUTOMATED TELLER MACHINE | \n";
cout << " ----------------------------------------------------------------------- \n";
cout << "| Please enter username and password to continue. | \n";
cout << "| | \n";
cout << "| | \n";
cout << "| | \n";
cout << " ----------------------------------------------------------------------- \n\n";
cout << "Username: ";
cin >> usr;
cout << "Password: ";
char c = ' ';
while(c != 13) //Password masking with *
{
c = getch();
pss += c;
cout << "*";
}
cin >> pss;
//logincheck (usr, pss);
getch();
}
/*
int logincheck (int usr, int pss, bankAccount b)
{
}
*/
int officer_func()
{
int officer_selection;
system("cls");
// officer menu
cout << " ----------------------------------------------------------------------- \n";
cout << "| Officer Menu | \n";
cout << " ----------------- ----------------- ----------------- ----------------- \n";
cout << " Please Select option to continue: \n" << endl << endl;
cout << "1) Enroll new customer : Press 1" << endl;
cout << "2) Return home : Press 2" << endl;
cout << "\nEnter option: ";
cin >> officer_selection;
switch(officer_selection)
{
case 1: enroll(); break;
case 2: main(); break;
}
}
int enroll()
{
bankAccount b;
system("cls");
cout << " ----------------------------------------------------------------------- \n";
cout << "| Enroll new customer | \n";
cout << " ----------------- ----------------- ----------------- ----------------- \n";
cout << " Please Select option to continue: \n" << endl << endl;
ofstream myfile;
b.balance = 0;
cout << "Please enter customer name: " << endl;
cin >> b.name;
cout << "Please enter customer address: " << endl;
cin >> b.address;
cout << "Please enter customer Account Number: " << endl;
cin >> b.accNo;
cout << "Please enter username: (ONLY Numerals)" << endl;
cin >> b.username;
//generatepass(bankAccount& b);
b.balance = 500000;
int genpass = (b.accNo + 10);
b.password = genpass;
cout << "\nPassword Generated: " << genpass;
myfile.open ("accounts.txt");
myfile << b.name << endl << b.address << endl << b.accNo << endl << b.username << endl << genpass << endl << b.balance;
myfile.close();
cout << "\n\nCustomer Account created! Press any key to save account file";
getch();
officer_func();
}
int customer_actions()
{
bankAccount b;
int cust_selection;
system("cls");
cout << " ----------------------------------------------------------------------- \n";
cout << "| Customer Menu | \n";
cout << " ----------------- ----------------- ----------------- ----------------- \n";
cout << " Please Select option to continue: \n" << endl << endl;
cout << "1) Check balance : Press 1" << endl;
cout << "2) Withdraw Cash : Press 2" << endl;
cout << "3) Deposit Cash : Press 3" << endl;
cout << "4) Transfer Cash : Press 4" << endl;
cout << "5) Return home : Press 5" << endl;
cout << "\nEnter option: ";
cin >> cust_selection;
switch(cust_selection)
{
case 1: b.checkbalance(); break;
case 2: b.withdraw(); break;
case 3:
for(int i=0;i<=20;i++)
{
b.deposit();
break;
}
case 4: break;
case 5: main(); break;
}
}
double bankAccount::checkbalance()
{
system("cls");
cout << " ----------------------------------------------------------------------- \n";
cout << "| Customer Menu | \n";
cout << " ----------------- ----------------- ----------------- ----------------- \n";
cout << "\n\nYour balance is: " << balance;
getch();
customer_actions();
return balance;
}
double bankAccount::withdraw()
{
system("cls");
cout << " ----------------------------------------------------------------------- \n";
cout << "| Customer Menu | \n";
cout << " ----------------- ----------------- ----------------- ----------------- \n";
cout << "\n\nEnter Withdraw amount: ";
cin >> withdrawamt;
if (balance > withdrawamt)
balance = (balance - withdrawamt);
else {
cout << "\nSorry you do not have enough money to make this transaction!";
getch();
customer_actions();
}
cout << "\nYou have withdrawn " << withdrawamt << " successfully!";
cout <<"\nYour balance is: " << balance;
getch();
customer_actions();
return balance;
}
double bankAccount::deposit()
{
double amt;
system("cls");
cout << " ----------------------------------------------------------------------- \n";
cout << "| Customer Menu | \n";
cout << " ----------------- ----------------- ----------------- ----------------- \n";
cout << "\n\nYOUR CURRENT BALANCE: " << balance << endl;
cout << "\nEnter amount to deposit: ";
cin >> amt;
balance = (balance + amt);
cout << "\nAmount depositted successfully!" << endl;
cout <<"\nYOUR CURRENT BALANCE: " << balance;
getch();
return balance;
}
我已经“评论”的代码是我用于测试的代码或者我正在处理的代码，现在不是真的需要（Y）
答案 0 :(得分：1)
您需要将bankAccount从一个功能传递到另一个功能。这可以通过传递bankAccount&作为函数的参数来完成，以便传递相同的对象。您修改bankAccount的功能当前使用的是local银行帐户，该帐户在剩余功能范围时会被丢弃！
一个丑陋的黑客可能是使用全局而不是考虑应用程序的简单性。