ATM program needs help here!!!

[bearling1024]

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

void checkbal(string accnum, double balance);
void withdraw(string accnum, double balance);
void deposit(string accnum,double balance);
void option(string accnum, int balance);

void main(){

int pin, accnum, pintrials;

pin=12345;
pintrials=3;

cout<<"***WELCOME TO ATM MAYBANK!!***"<< endl;
cout<<"Please Enter Your Account Number: ";
cin>>accnum;

bool x;

do{
cout << "\nPlease Enter Your PIN Number: ";
cin >> pin;

if (pin==12345){
cout << "PIN correct!" << endl;
pintrials = -1;
x = true;
}
else{
pintrials--;
cout << "You have "<< pintrials<< " attempts remaining."<<endl;
x = false;
}

if (pintrials == 0){
cout<<"\nYou have exceed the PIN attempts."<<endl;
cout<<"Please contact us in any branch of our bank."<<endl;
cout<<"Thank you."<<endl;
break;
}
}while (x != true);

system("pause");
}

void checkbal(string accnum, int balance){
cout<<"Account number:"<<accnum<<endl;
cout<<"Your balance is RM"<<balance<<endl;
}

void withdraw(string accnum, int balance){
int withdraw=0,wdamount;
char ans;

cout<<"Please choose your transaction."<<endl;
cout<<"1.)RM100"<<endl;
cout<<"2.)RM300"<<endl;
cout<<"3.)RM500"<<endl;
cout<<"4.)Enter value."<<endl;
do{
switch(withdraw){
case 1:wdamount=100;
cout<<"Withdraw RM100."<<endl;break;
case 2:wdamount=300;
cout<<"Withdraw RM300."<<endl;break;
case 3:wdamount=500;
cout<<"Withdraw RM500."<<endl;break;
case 4:cout<<"Enter withdraw value:RM";
cin>>wdamount;break;
}
if(withdraw==1 || withdraw==2 || withdraw==3 || withdraw==4)
break;
else
cout<<"Do you want to continue? [Y/y-Yes N/n-No]"<<endl;
cin>>ans;
}while(ans=='Y' && ans=='y');
balance=balance-wdamount;
cout<<"Your balance is RM"<<balance<<endl;
}

void deposit(string accnum, int balance){
int deposit;


cout<<"Please enter your cash into space provided."<<endl;
cout<<"Please enter amount that you put in :";
cin>>deposit;
balance=balance+deposit;
cout<<"Your balance now is RM"<<balance<<endl;
}

void option(string accnum, int balance){
int choice;
char ans;

do{
cout<<"Please choose your :"<<endl;
cout<<"1.)Check Balance."<<endl;
cout<<"2.)Cash Withdraw."<<endl;
cout<<"3.)Cash Deposit."<<endl;
cin>>choice;
switch(choice){
case 1:checkbal(accnum, balance);break;
case 2:withdraw(accnum, balance);break;
case 3:deposit(accnum,balance);break;
default:cout<<"Invalid Input."<<endl;
}
cout<<"Do you want to continue? [Y/y-Yes N/n-No]";
cin>>ans;
}while(ans=='Y'&&ans=='y');
}


This is my program, but it cant loop well when I compile it.
When I entered correct password, then the system will terminate.
Someone please help me, Thank you very much!

[wildblue]

Your main function just validates the PIN entered - do you mean to call the other functions you've written?

You'll need to change where you have this check - && means both conditions are true and ans can't be both Y and y at the same time.
}while(ans=='Y' && ans=='y');

[bearling1024]

Means I need to do what changes inside this loop?
I have try to change }while(ans=='Y' && ans=='y'); to }while(ans=='Y' || ans=='y');
Its still cannot go through the menu and stuck at the PIN there.

[wildblue]

If you enter the correct password, the program as you have it will end because there are no further instructions to execute. I figure you mean to show them a menu once they enter the correct password?

int main(){

    int pin, accnum, pintrials;
    
    pin=12345;
    pintrials=3;
    
    cout<<"***WELCOME TO ATM MAYBANK!!***"<< endl;
    cout<<"Please Enter Your Account Number: ";
    cin>>accnum;
    
    bool x;
    
    do{
        cout << "\nPlease Enter Your PIN Number: ";
        cin >> pin;
        
        if (pin==12345){
            cout << "PIN correct!" << endl;
            pintrials = -1;
            x = true;
        }
        else{
            pintrials--;
            cout << "You have "<< pintrials<< " attempts remaining."<<endl;
            x = false;
        }
        
        if (pintrials == 0){
            cout<<"\nYou have exceed the PIN attempts."<<endl;
            cout<<"Please contact us in any branch of our bank."<<endl;
            cout<<"Thank you."<<endl;
            break;
        }
    }while (x != true);
    
//call functions here?

    system("pause");
}

[bearling1024]

How to call function in this program?
Can you teach me how to solve it?

[bearling1024]

I have try to type in option(accnum,balance); at the place you said, but its cannot go through the withdraw and deposit.
How to fixed it?