这是一个 ATM 风格的程序，但目前它并不能完全满足我的需要......
我需要获取当前余额，当资金从支票或储蓄中转出时，它应该将其添加到支票中并从储蓄中减去。确实如此，但不正确...
输入示例
-=[ Funds Transfer ]=-
-=[ Savings to Checking ]=-
Account Name: nomadic
Amount to transfer: $400
New Balance in Checking: $900 // original was 500
New Balance in Savings: $7.7068e+012 // this should now be 1100...
这是我的代码，它有很多代码，但没有错误，因此将其放入 IDE 并编译对于任何愿意提供帮助的人来说应该相当快。
主银行类.h
#ifndef MAINBANKCLASS_H
#define MAINBANKCLASS_H
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
class Banking
{
protected:
string checkAcctName, saveAcctName; // Name on the account
int acctNumber[13]; // Account number
float acctBalance, initSaveDeposit, initCheckDeposit, depAmt; // amount in account, and amount to deposit
public:
char getBalanceChoice(); // Get name on account for displaying relevant information
char newAccountMenu(); // Create a new account and assign it a random account number
void invalid(char *); // If an invalid option is chosen
char menu(); // Print the main menu for the user.
virtual float deposit(){ return 0; } // virtual function for deposits
// virtual float withdrawal() = 0; // Virtual function for withdrawals
void fatal(char *); // Handles fatal errors.
Banking();
};
class Checking : public Banking
{
public:
friend ostream operator<<(ostream &, Checking &);
friend istream operator>>(istream &, Checking &);
Checking operator <= (const Checking &) const;
void newCheckingAccount();
void viewCheckingBalance();
void transferFromSaving();
float deposit() { return (acctBalance += depAmt); }
};
class Saving : public Banking
{
public:
friend ostream &operator<<(ostream &, Saving &);
friend istream &operator>>(istream &, Saving &);
Saving operator <= (const Saving &) const;
void newSavingAccount();
void viewSavingBalance();
void transferFromChecking();
float deposit() { return (acctBalance += depAmt); }
};
class checkAndSave : public Banking
{
public:
void newCheckAndSave();
void viewBothBalances();
};
#endif
银行账户.cpp
#include <iostream>
#include <sstream>
#include <string>
#include <iomanip>
#include <fstream>
#include <time.h>
#include "MainBankClass.h"
/*****************************\
| BANKING CONSTRUCTOR |
\*****************************/
Banking::Banking()
{
string acctName; // Name on the account
acctNumber[13] = 0; // Account number
acctBalance = 0;
initCheckDeposit = 0;
initSaveDeposit = 0;
depAmt = 0;
};
/********************************\
| The following code is to print the menu |
| and recieve the users choice on what |
| they want to do with the ATM |
\********************************/
char Banking::menu()
{
char choice;
system("cls");
cout << "\t\t -=[ Main Menu ]=- \n\n"
<< "\tA) Create New Account\n"
<< "\tB) View Account Balance\n"
<< "\tC) Transfer Funds From Checking To Savings\n"
<< "\tD) Transfer Funds From Savings To Checking\n"
<< "\tE) Exit\n"
<< "\n\n\tSelection: ";
cin >> choice;
cin.ignore();
choice = toupper(choice);
while(!isalpha(choice))
{
invalid("[!!] Invalid selection.\n[!!] Choose a valid option: ");
cin >> choice;
cin.ignore();
}
return choice;
}
/*********************\
| Will read in account choic |
| and display it for the user |
\*********************/
char Banking::getBalanceChoice()
{
char choice;
fstream saveFile("saving.dat", ios::in | ios::beg);
system("cls");
cout << "\t\t -=[ View Account Balance ]=-\n\n";
cout << "A) View Checking Account\n"
<< "B) View Saving Account\n"
<< "C) View Checking \\ Saving Account\n" << endl;
cout << "Choice: ";
cin >> choice;
choice = toupper(choice);
if(!isalpha(choice))
fatal(" [!!] Invalid Choice");
return choice;
}
/***************************\
| Incase an invalid decision to made |
| this throws the error message sent |
| to it by the calling area |
\***************************/
void Banking::invalid(char *msg)
{
cout << msg;
}
/*************************\
| Used if files can not be opened |
| and exits with code 251: |
| miscommunication with server |
\*************************/
void Banking::fatal(char *msg)
{
cout << msg;
exit(1);
}
/***************************\
| Create an account, either checking |
| or savings, or both. |
| Must should create a randomly |
| generated account number that will |
| correspond with each account. |
\***************************/
/************************\
NOTE:: WILL BE UPDATED
TO CONTAIN A PIN FOR
ACCOUNT VERIFICATION
*************************/
char Banking::newAccountMenu()
{
srand(time(NULL)); // Seed random generator with time initialized to NULL
char acctChoice; // choice for the account type
ofstream checkFile("checking.dat", ios::out | ios::app); // For saving checking accounts
ofstream saveFile("saving.dat", ios::out | ios::app); // For saving savings accounts
system("cls");
cout << "\t\t-=[ New Account Creation ]=-\n\n" << endl;
cout << "A) Checking Account\n"
<< "B) Savings Account\n"
<< "C) Checking and Saving Account\n" << endl;
cout << "New account type: ";
cin >> acctChoice;
acctChoice = toupper(acctChoice);
cin.clear();
cin.sync();
return acctChoice;
}
/*********************************************************************
**********************************************************************
CHECKING ACCOUNT CODE
**********************************************************************
**********************************************************************/
// New Checking Account Creation
void Checking::newCheckingAccount()
{
system("cls");
ofstream checkFile("checking.dat", ios::out | ios::app); // For saving checking accounts
cout << "\t\t -=[ New Checking Account ]=- \n" << endl;
cout << "Name of the main holder to be on the account: ";
getline(cin, checkAcctName);
cout << "Initial deposit amount: $";
cin >> initCheckDeposit;
if(initCheckDeposit <= 0)
{
while(initCheckDeposit <= 0)
{
invalid("[!!] 0 or negative amount entered\nMaybe a typo?\n");
cout << "Deposit Amount: $";
cin >> initCheckDeposit;
}
}
if(!checkFile)
fatal("[!!] Fatal Error 251: Miscommunication with server\n");
checkFile << checkAcctName << endl;
for(int j = 0; j < 13; j++)
{
acctNumber[j] = (rand() % 10); // Build a random checking account number
checkFile << acctNumber[j];
}
checkFile << endl;
checkFile << initCheckDeposit << endl;
checkFile.close();
}
void Checking::viewCheckingBalance()
{
fstream checkFile("checking.dat", ios::in | ios::beg);
string name;
int i = 0;
double balance = 0;
system("cls");
cout << "\t\t -=[ View Checking Account ]=-\n\n" << endl;
cout << "Account Name: ";
cin.sync();
getline(cin, name);
getline(checkFile, checkAcctName);
while(name != checkAcctName && !checkFile.fail())
{
i++;
getline(checkFile, checkAcctName);
}
if(name == checkAcctName)
{
system("cls");
cout << "\t\t -=[ Checking Account Balance ]=-\n\n" << endl;
cout << "Account Name: " << checkAcctName << "\n";
cout << "Account Number: ";
for(int j = 0; j < 13; j++)
{
char input_number;
stringstream converter;
checkFile.get(input_number);
converter << input_number;
converter >> acctNumber[j];
cout << acctNumber[j];
}
// if balance a problem, try the below commented out line
// checkFile.ignore(numeric_limits<streamsize>::max(), '\n');
cout << endl;
checkFile >> acctBalance;
cout << "Balance: $" << fixed << showpoint << setprecision(2) << acctBalance << endl;
}
else
fatal("[!!] Invalid Account\n");
checkFile.close();
getchar();
}
void Checking::transferFromSaving() // Move funds FROM SAVINGS to CHECKING
{
system("cls");
string name;
long checkPos = 0;
long savePos = 0;
float savingBalance = 0;
string saveAcctName;
int i = 0;
cin.clear();
fstream saveFile("saving.dat", ios::in | ios::out | ios::beg);
fstream checkFile("checking.dat", ios::in | ios::out | ios::beg);
cout << "\t\t-=[ Funds Transfer ]=-" << endl;
cout << "\t\t-=[ Savings to Checking ]=-" << endl;
cout << "Account Name: ";
cin.sync();
getline(cin, name);
getline(checkFile, checkAcctName);
while(name != checkAcctName && !checkFile.fail())
{
i++;
getline(checkFile, checkAcctName);
}
getline(saveFile, saveAcctName);
while(name != saveAcctName && !saveFile.fail())
{
i = 0;
i++;
getline(saveFile, saveAcctName);
}
if(name == checkAcctName)
{
cout << "Amount to transfer: $";
float depAmt = 0;
cin >> depAmt;
for(int j = 0; j < 13; j++)
{
char input_number;
stringstream converter;
checkFile.get(input_number);
converter << input_number;
converter >> acctNumber[j];
}
checkPos = checkFile.tellg(); // if the file is found, get the position of acctBalance and store it in ptrPos
checkFile.seekg(checkPos);
checkFile >> acctBalance;
savePos = saveFile.tellg();
saveFile.seekg(savePos); // sending the cursor in the file to ptrPos + 1 to ignore white space
saveFile >> savingBalance;
if(savingBalance < depAmt) // if checking account does not have enough funds, exit with NSF code
fatal("[!!] Insufficient Funds\n");
acctBalance += depAmt; // can be changed to an overloaded operator
savingBalance -= depAmt; // can be changed to an overloaded operator
checkFile.seekp(checkPos); // go to position previously set above
checkFile << acctBalance; // write new balance to checkFile
saveFile.seekp(savePos); // same thing as above comment
saveFile << savingBalance; // write new balance to saveFile
cout << "New Balance in Checking: $" << acctBalance << endl; // will be removed later
cout << "New Balance in Savings: $" << savingBalance << endl; // will be removed later aswell
}
else
fatal("[!!] Linked accounts do not exist.\n"); // if account is not found
saveFile.close();
checkFile.close();
}
/********************************************************
********************************************************
SAVING ACCOUNT CODE
*********************************************************
*********************************************************/
void Saving::newSavingAccount()
{
system("cls");
ofstream saveFile("saving.dat", ios::out | ios::app); // For saving savings accounts
cout << "\t\t -=[ New Savings Account ]=- \n" << endl;
cout << "Name of the main holder to be on account: ";
getline(cin, saveAcctName);
cout << "Deposit Amount: $";
cin >> initSaveDeposit;
if(initSaveDeposit <= 0)
{
while(initSaveDeposit <= 0)
{
invalid("[!!]0 or negative value entered.\nPerhaps a typo?\n");
cout << "Deposit amount: $";
cin >> initSaveDeposit;
}
}
if(!saveFile)
fatal("[!!] Fatal Error 251: Miscommunication with server\n");
saveFile << saveAcctName << endl;
for(int j = 0; j < 13; j++)
{
acctNumber[j] = (rand() % 10);
saveFile << acctNumber[j];
}
saveFile << endl;
saveFile << initSaveDeposit << endl;
saveFile.close();
}
void Saving::viewSavingBalance()
{
string name;
int i = 0;
fstream saveFile("saving.dat", ios::in | ios::beg);
cin.clear();
system("cls");
cout << "\t\t -=[ View Saving Account ]=-\n\n" << endl;
cout << "Account Name: ";
cin.sync();
getline(cin, name);
getline(saveFile, saveAcctName);
while(name != saveAcctName && !saveFile.fail())
{
i++;
getline(saveFile, saveAcctName);
}
if(name == saveAcctName)
{
system("cls");
cout << "\t\t -=[ Saving Account Balance ]=-\n\n" << endl;
cout << "Account Name: " << saveAcctName << "\n";
cout << "Account Number: ";
for(int j = 0; j < 13; j++)
{
char input_number;
stringstream converter;
saveFile.get(input_number);
converter << input_number;
converter >> acctNumber[j];
cout << acctNumber[j];
}
// if balance a problem, try the below commented out line
// checkFile.ignore(numeric_limits<streamsize>::max(), '\n');
cout << endl;
saveFile >> acctBalance;
cout << "Balance: $" << fixed << showpoint << setprecision(2) << acctBalance << endl;
}
else
fatal("[!!] Invalid Account\n");
saveFile.close();
getchar();
}
// NEED TO WORK ON THIS PORTION TOMORROW AND MONDAY, ADD OVERLOADED OPS FOR ASSIGNMENT!!!!!!!
void Saving::transferFromChecking() // This is to take money FROM checking and ADD IT TO SAVING
{
system("cls");
string name;
long savePos = 0;
long checkPos = 0;
float checkingBalance = 0;
string checkAcctName;
int i = 0;
cin.clear();
fstream saveFile("saving.dat", ios::in | ios::out | ios::beg);
fstream checkFile("checking.dat", ios::in | ios::out | ios::beg);
cout << "\t\t-=[ Funds Transfer ]=-" << endl;
cout << "\t\t-=[ Checking to Savings ]=-" << endl;
cout << "Account Name: ";
cin.sync();
getline(cin, name);
getline(saveFile, saveAcctName);
getline(checkFile, checkAcctName);
while(name != saveAcctName && name != checkAcctName && !saveFile.fail() && !checkFile.fail())
{
i++;
getline(saveFile, saveAcctName);
getline(checkFile, checkAcctName);
}
if(name == saveAcctName)
{
cout << "Amount to transfer: $";
float depAmt = 0;
cin >> depAmt;
for(int j = 0; j < 13; j++)
{
char input_number;
stringstream converter;
saveFile.get(input_number);
converter << input_number;
converter >> acctNumber[j];
}
savePos = saveFile.tellg(); // if the file is found, get the position of acctBalance and store it in ptrPos
saveFile.seekg(savePos);
saveFile >> acctBalance;
checkPos = checkFile.tellg();
checkFile.seekg(checkPos); // if file is found, store current position of the cursor to ptrPos
checkFile >> checkingBalance;
if(checkingBalance < depAmt) // if checking account does not have enough funds, exit with NSF code
fatal("[!!] Insufficient Funds\n"); // Can also place overloaded op here
acctBalance += depAmt; // can be changed to an overloaded operator
checkingBalance -= depAmt; // can be changed to an overloaded operator
saveFile.seekg(savePos); // go to position previously set above
saveFile << acctBalance; // write new balance to saveFile
checkFile.seekg(checkPos); // same thing as above comment
checkFile << checkingBalance; // write new balance to checkFile
cout << "New Balance in Savings: $" << acctBalance << endl; // will be removed later
cout << "New Balance in Checking: $" << checkingBalance << endl; // will be removed later aswell
}
else
fatal("[!!] Linked accounts do not exist.\n"); // if account is not found
saveFile.close();
checkFile.close();
}
/********************************************
********************************************
CHECK AND SAVE CODE
**********************************************
**********************************************/
void checkAndSave::newCheckAndSave()
{
system("cls");
ofstream saveFile("saving.dat", ios::out | ios::app); // For saving savings accounts
ofstream checkFile("checking.dat", ios::out | ios::app); // For saving checking accounts
cout << "\t -=[ New Checking & Saving Account ]=- \n" << endl;
cout << "Name of the main holder to be on account: ";
getline(cin, checkAcctName);
saveAcctName = checkAcctName;
cout << "Checking Deposit Amount: $";
cin >> initCheckDeposit;
if(initCheckDeposit <= 0)
{
while(initCheckDeposit <= 0)
{
invalid("[!!] 0 or negative amount entered\nMaybe a typo?\n");
cout << "Deposit Amount: $";
cin >> initCheckDeposit;
}
}
cout << "Saving Deposit Amount: $";
cin >> initSaveDeposit;
if(initSaveDeposit <= 0)
{
while(initSaveDeposit <= 0)
{
invalid("[!!]0 or negative value entered.\nPerhaps a typo?\n");
cout << "Deposit amount: $";
cin >> initSaveDeposit;
}
}
if(!saveFile || !checkFile)
fatal("[!!] Fatal Error 251: Miscommunication with server\n");
checkFile << checkAcctName << endl;
saveFile << saveAcctName << endl;
for(int j = 0; j < 13; j++)
{
acctNumber[j] = (rand() % 10);
checkFile << acctNumber[j];
saveFile << acctNumber[j];
}
saveFile << endl;
saveFile << initSaveDeposit << endl;
checkFile << endl;
checkFile << initCheckDeposit << endl;
checkFile.close();
saveFile.close();
}
void checkAndSave::viewBothBalances()
{
string name;
int i = 0;
fstream checkFile("checking.dat", ios::in | ios::beg);
fstream saveFile("saving.dat", ios::in | ios::beg);
system("cls");
cin.clear();
cout << "\t-=[ Saving & Checking Account Balance ]=-\n\n" << endl;
cout << "Account Name: ";
cin.sync();
getline(cin, name);
getline(checkFile, checkAcctName);
saveAcctName = name;
/**********************\
| Checking Account portion |
| of the checking & savings |
| overview |
\**********************/
while(name != checkAcctName && !checkFile.fail())
{
i++;
getline(checkFile, checkAcctName);
}
system("cls");
if(name != checkAcctName && checkFile.fail())
invalid("\n\n[!!] No Checking Account Found\n");
cout << "\t\t -=[ Checking Account ]=- \n" << endl;
cout << "Account Name: " << checkAcctName << "\n";
cout << "Account Number: ";
for(int j = 0; j < 13; j++)
{
char input_number;
stringstream converter;
checkFile.get(input_number);
converter << input_number;
converter >> acctNumber[j];
cout << acctNumber[j];
}
// if balance a problem, try the below commented out line
// checkFile.ignore(numeric_limits<streamsize>::max(), '\n');
cout << endl;
checkFile >> acctBalance;
cout << "Balance: $" << fixed << showpoint << setprecision(2) << acctBalance << endl;
/*********************\
| Saving Account portion |
| of the checking & saving |
| overview |
\*********************/
getline(saveFile, saveAcctName);
while(name != saveAcctName && !saveFile.fail())
{
i++;
getline(saveFile, saveAcctName);
}
if(name != saveAcctName && saveFile.fail())
invalid("\n\n[!!] No Saving Account Found\n");
if(name == saveAcctName)
{
cout << "\t\t -=[ Saving Account ]=-\n\n" << endl;
cout << "Account Name: " << saveAcctName << "\n";
cout << "Account Number: ";
for(int j = 0; j < 13; j++)
{
char input_number;
stringstream converter;
saveFile.get(input_number);
converter << input_number;
converter >> acctNumber[j];
cout << acctNumber[j];
}
// if balance a problem, try the below commented out line
// checkFile.ignore(numeric_limits<streamsize>::max(), '\n');
cout << endl;
saveFile >> acctBalance;
cout << "Balance: $" << fixed << showpoint << setprecision(2) << acctBalance << endl;
}
if(name != saveAcctName && name != checkAcctName && saveFile.fail() && checkFile.fail())
fatal("[!!] No Accounts Have Been Found\n");
checkFile.close();
saveFile.close();
getchar();
}
主文件
#include <iostream>
#include "MainBankClass.h"
using namespace std;
int main()
{
Banking bank;
Checking check;
Saving save;
checkAndSave CanS;
char choice;
choice = bank.menu(); // Call the banking menu
switch(choice)
{
case 'A':
choice = bank.newAccountMenu();
switch(choice)
{
case 'A':
check.newCheckingAccount();
break;
case 'B':
save.newSavingAccount();
break;
case 'C':
CanS.newCheckAndSave();
break;
default:
system("cls");
bank.fatal("[!!] Invalid option\n");
break;
}
break;
/***********************************************/
case 'B':
choice = bank.getBalanceChoice();
switch(choice)
{
case 'A':
check.viewCheckingBalance();
break;
case 'B':
save.viewSavingBalance();
break;
case 'C':
CanS.viewBothBalances();
break;
default:
bank.fatal("Invalid decision\n");
break;
}
/*************************************************/
break;
case 'C':
check.transferFromSaving();
break;
case 'D':
save.transferFromChecking();
break;
case 'E':
system("cls");
cout << "\t\t-=[ Disconnecting From System ]=-\n";
cout << "\t\t\t Thank you" << endl;
cout << "\t\t Have a nice day!" << endl;
exit(1);
break;
default:
system("cls");
bank.invalid("\n\n\n\n\t\t [+] Invalid Selection \n\t\t[+] Disconnecting From System \n\t\t\tGood-bye \n\n\n\n\n\n\n");
exit(1);
break;
}
return 0;
}