PIN(FINAL) +DEPOSIT(FINAL)

#include <iostream> //accept pin number and verify if correct

using namespace std;
int i,trans,dCash,withdrawCash;
char transs;
int currentCash = 1500;
int pin[4];
int existingPin, trialPin, newPin;
int main();
int transactions();
int exitProgram(){
	cout << "Good bye.";
	exit(0);
}
int moreTransaction(){
	cout << "Would you like another transaction?" <<endl;
	cout << "y/n"<<endl;
		cin >>transs;
		switch(transs){
			case 'y':
				system("cls");
				transactions();
			case 'n':
				cout<< "Thank you for using Budie De Oro. Good bye";
				exit(0);
		}
}
int depositCash(){
		cout<< "DEPOSIT: Select Amount"<<endl;
		cout <<"Current cash: "<< currentCash<<endl;
		cout<< "<1>P100		<2>P200"<<endl;
		cout<< "<3>P500		<4>P1000"<<endl;
			cin >> dCash;
			switch(dCash){
				case 1:
					currentCash+=100;
					cout << "Successfully deposited: P100 into account"<<endl;
						cout <<endl;
						moreTransaction();


				case 2:
					currentCash+=200;
					cout << "Successfully deposited: P200 into account"<<endl;
						cout << endl;
						moreTransaction();
				case 3:
					currentCash+=500;
					cout << "Successfully deposited: P500 into account"<<endl;
						cout << endl;
						moreTransaction();
				case 4:
					currentCash+=1000;
					cout << "Successfully deposited: P1000 into account"<<endl;
						cout << endl;
						moreTransaction();
			}
			cout <<"Current Cash"<< currentCash;

}
int transactions(){
	cout << "Welcome, USER " << existingPin<<endl;
	cout << "Select  transaction"<<endl;
	cout << "<1> Deposit"<<endl;
	cout << "<2> Withdraw"<<endl;
		cin >> trans;
			switch(trans){
				case 1:
					depositCash();
			}
}

 int newPinz(){
	cout << "REGISTRATION: Please enter PIN: ";
					cin >> pin[0];
					existingPin=pin[0];
					cout << "New PIN created successfully";
					system("cls");
					main();

}

int changePin(){
		cout << "CHANGE PIN: Please enter your existing PIN\n";
					for(i=0; i<4; i++){
					cin >> trialPin;
					if(trialPin == existingPin){
					cout << "Welcome " << existingPin <<"\n";
					cout << "Enter your new PIN ";
					cin >> newPin;
					existingPin = newPin;
					cout << "Your PIN has been changed \n";
					cout << endl;
					system("cls");
					main();
					}
					else{
					cout <<"Error! Please enter PIN : ";}
				}
}

int existingPinz(){
		cout << "Please enter your existing PIN \n";
					for (i=1;i<4;i++){
					cin >> pin[i];
					if(existingPin == pin[i]){
					cout << "Validated, Welcome "<< existingPin <<endl;
					system("cls");
					transactions();
					}
					else{
					cout << "ERROR! PIN IS INCORRECT\n" << "Try again "<<"\n";
					main();
					}
				}
}



int main(){

	cout << "Welcome to BDO: Budie De Oro"<<endl;
	cout <<"<1>Enter New PIN" << endl
		 <<"<2>Change PIN" << endl
		 <<"<3>Enter Existing PIN"<<endl
		 <<"<>EXIT BANK "<<endl;
		cin >> trans;
			switch(trans){
				case 1:
					newPinz();

				case 2:
					changePin();

				case 3:
					existingPinz();
}
}