app.cpp

#include <iostream>
using namespace std;
double balance=4000;
int passWord=1234;
int choice;
int enteredPassword;
int amount;

void show(){
    cout<<"****[Menu]*****\n";
    cout<<"*  1:Balance  *\n";
    cout<<"*  2:WithDraw *\n";
    cout<<"*  3:Deposit  *\n";
    cout<<"*  4:Exit     *\n";
    cout<<"***************\n";
}
void process(){
    cout << "Enter the password: ";
    cin >> enteredPassword;
    if(enteredPassword==passWord){
        cout<<"Hello 😊"<<endl;
        do{
        show();
        cout<<"Please enter Your choice: ";
        cin>>choice;
        switch(choice){
            case 1:
                cout<<"Your balance is: "<<balance<<"💸"<<endl;
                break;
             case 2:
                cout<<"****NOTE🚨**** \n Your balance is= "<<balance<<"💸"<<endl;
                cout << "Enter amount to withdraw: ";
                cin >> amount;
                if(amount <= balance) {
                    balance -= amount;
                    cout << "Your balance now is = " << balance <<"💸"<< endl;
                } else{cout<<"Error ☠\n" ;}
                break;
            case 3:
                cout << "Enter amount to deposit: ";
                cin>>amount;
                balance += amount;
                cout<<"Your balance now is = "<<balance <<" 🤑\n";  
                break;
            case 4:
                cout<<"Good bye 😊 ";
                break;
            default:
                cout << "Invalid choice ❌  \n Please choose between (1:4)😃"<<endl;
        }
    }
    while (choice != 4);
    }
     else {
        cout<<"Invalid PassWord 😥";
    }   
}
int main()
{
    process();

    return 0;
}