banking.cpp

#include <iostream>

double showBalance(double balance);
double deposit(double balance);
double withdraw(double balance);
double fixedDeposit(double balance);

int main() 
{
    double balance = 1500000.75;
    int choice;

    do {
        std::cout << "*************ENTER INTO THE BANK**************\n";
        std::cout << "1. Show Balance\n";
        std::cout << "2. Deposit Money\n";
        std::cout << "3. Withdraw Money\n";
        std::cout << "4. Fixed Deposit\n";
        std::cout << "5. Exit\n";
        std::cout << "Enter your choice: ";
        std::cin >> choice;

        switch (choice) 
        {
            case 1:
                std::cout << "Current Balance: " << showBalance(balance) << std::endl;
                break;

            case 2:
                balance = deposit(balance);
                break;

            case 3:
                balance = withdraw(balance);
                break;

            case 4:
                balance = fixedDeposit(balance);
                break;

            case 5:
                std::cout << "Exiting...\n";
                break;

            default:
                std::cout << "Wrong Choice\n";
                break;
        }
    } while (choice >= 1 && choice < 5);

    return 0;
}

double showBalance(double balance) 
{
    return balance;
}

double deposit(double balance)
 {
    double amount;
    std::cout << "Enter deposit amount: ";
    std::cin >> amount; 

    balance += amount; 
    std::cout << "Deposited: " << amount << "\n";
    return balance;
}

double withdraw(double balance) 
{
    double amount;
    std::cout << "Enter withdrawal amount: ";
    std::cin >> amount;

    if (amount > balance)
     {
        std::cout << "Insufficient balance!\n";
        return balance; 
    }

    balance -= amount; 
    std::cout << "Withdrawn: " << amount << "\n";
    return balance;
}

double fixedDeposit(double balance) 
{
    double amount;
    std::cout << "Enter amount for fixed deposit: ";
    std::cin >> amount;

    if (amount > balance)
    {
        std::cout << "Insufficient balance for fixed deposit!\n";
        return balance; 
    }

    balance -= amount; 
    std::cout << "Fixed deposit created for: " << amount << "\n";
    return balance;
}