ATM machine ask for ATM card or Username and password

[knight alpha]

#include <iostream>

#include <string>
using namespace std;

int main () {

char c;

system("cls");
cout<<"Welcome to Metrobank:"<<endl;
cout<<"Please choose if you want to use your ATM card"<<endl;
cout<<"or just your USERNAME and PASSWORD\n";
cout<<"1. ATM card"<<endl;
cout<<"2. USERNAME"<<endl;
cout<<"any key: CREDITS"<<endl;
cout<<"Select Choice: ";
cin>>c;


switch (c){
case '1':
system ("cls");
int pin;
float account,amount,yes,no;
char ans,opt;


cout<<"Welcome to Metrobank:"<<endl;
cout<<"Please insert your card:"<<endl;
cout<<"Enter pin:\t";
cin>>pin;cout<<endl;




if(pin!=930110){
system("cls");
cout<<"invalid Pin"<<endl<<endl;
cout<<"Enter pin:\t";
cin>>pin;

if(pin!=930110){
system("cls");
cout<<"invalid Pin"<<endl<<endl;
cout<<"Enter pin:\t";
cin>>pin;

if(pin!=930110){
cout<<"invalid Pin"<<endl<<endl;

if(pin!=930110){
cout<<"You have reach the maximum attempt."<<endl;
cout<<"Sorry. You are not allowed to proceed another transaction."<<endl;
cout<<"Please come again after two days."<<endl;
cout<<"Please, get your card."<<endl;
}
}else{



do{
cout<<"Select Transaction:"<<endl;
cout<<"A.Balance Inquiry:"<<endl;
cout<<"B.Withdrawal:"<<endl;
cin>>opt;

switch(opt){

case'A':
case'a':
system("cls");
cout<<"Saving Account=2000:"<<endl;
break;

case'B':
case'b':
system ("cls");
cout<<"Do you want to withdraw?:\t"<<endl;
cin>>yes or no;
cout<<"Enter amount if you want to withdraw:\t"<<endl;
cin>>amount;
cout<<"Please wait your transaction is being process:\t"<<endl;
cout<<"Please get your card,money,receipt:\t"<<endl;
break;
}
cout<<"Another Transaction?:[]";
cin>>ans;
system("cls");
}while(ans=='y'||ans=='Y');

}}else{

do{
cout<<"Select Transaction:"<<endl;
cout<<"A.Balance Inquiry:"<<endl;
cout<<"B.Withdrawal:"<<endl;
cin>>opt;




switch(opt){
case'A':
case'a':
system("cls");
cout<<"Saving Account=2000:"<<endl;

break;
case'B':
case'b':
system ("cls");
cout<<"Do you want to withdraw?:\t"<<endl;
cin>>amount;
cout<<"Enter amount if you want to withdraw:\t"<<endl;
cin>>amount;
cout<<"Please wait your transaction is being process:\t"<<endl;
cout<<"Please get your card,money,receipt:\t"<<endl;

break;


}
cout<<"Another Transaction?:[y]";
cin>>ans;
system("cls");
}while(ans=='y'||ans=='Y');

}

}
else{

do{
cout<<"Select Transaction:"<<endl;
cout<<"A.Balance Inquiry:"<<endl;
cout<<"B.Withdrawal:"<<endl;
cin>>opt;




switch(opt){
case'A':
case'a':
system("cls");
cout<<"Saving Account=2000:"<<endl;

break;
case'B':
case'b':
system ("cls");

cout<<"Enter amount if you want to withdraw:\t"<<endl;
cin>>amount;
cout<<"Please wait your transaction is being process:\t"<<endl;
cout<<"Please get your card,money,receipt:\t"<<endl;

break;


}
cout<<"Another Transaction?:[y/n]";
cin>>ans;
system("cls");
}while(ans=='y'||ans=='Y');

}

system("pause");

return main();


break;


case '2':
system("cls");
string Usern,knight,User;
float y,x, pin1;
double balance =0, balance2;
double withdraw, deposit;
int option;

cout<<"if not yet registered please press \"1\""<<endl;
cout<<"if registered press \"2\""<<endl;
cin>>x;cout<<endl;
if (x==1){
system("cls");
cout<<"Your Username: \t ";
cin>>User;cout<<endl;
cout<<"Your Password: \t";
cin>>pin1;
return main ();
}if (x=='2'){
system ("cls");
cout<<"Please Enter your Username:"<<endl;
cin>>Usern;cout<<endl;
if (Usern==User){
{
cout <<"Enter Password: "<<endl;
cin>>y;
if (y=123456){
cout<<" ***Welcome to Metrobank***"<<endl;
cout<<"*** Automated Teller Machine***"<<endl;
cout<<"Choose a Transaction:\n";
cout<<"\n";
cout<<"[1] Inquire Balance \n"
<<"[2] Withdraw \n"
<<"[3] Deposit \n"
<<"[4] Quit \n"
<<"\n"
<<"Enter Option:";
cin>>option;

switch(option)
{
case 1:
system("cls");
cout<<"\n[[[BALANCE INQUIRY]]]\n";
cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(2);
cout<<"\n Your current balance is $"<<balance2<<endl;
system("pause");
return main();
break;
case 2:
system("cls");
cout<<"\n[[[WITHDRAW]]]\n";
cout<<"Enter amount: $";
cin>>withdraw;
if (balance2<withdraw){
balance = balance2 - withdraw;

cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(2);

cout<<"You withdrew $"<<withdraw<<endl;
cout<<"Your remaining balance is $"<<balance<<endl;
}else{
cout<<" you have insufficient balance: "<<endl;
}
system("pause");
break;
case 3:
system("cls");
cout<<"\n[[[DEPOSIT]]]\n";
cout<<"Enter amount: $";
cin>>deposit;

balance2 = balance + deposit;

cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(2);

cout<<"You deposited $"<<deposit<<endl;
cout<<"Your new balance is $"<<balance2<<endl;
system("pause");
return main();
case 4:
system("cls");
cout<<"\n***[[[EXIT MODE]]]***\n";
system("pause");

break;


default:
cout<<"\n That is an invalid option \n";
system("pause");
return main();

break;


}




}


}
cout<<"Created by: Group 1 BSIT-2 D2"<<endl;
cout<<" the Group Members are:"<<endl;
cout<<"\t - RONEL ANTATAP"<<endl;
cout<<"\t - MARK JAMES SORIANO"<<endl;
cout<<"\t - CHESKA TERADO"<<endl<<endl;
cout <<"thank you:\n\n"<<endl;
cout<<"GOD BLESS:"<<endl;


}}}

system("pause");

return 0;
}





||| I need help about this .ASAP

[Aceix]

Are you receiving errors?
If yes, then post them. Also please edit your post above with code tags--the <> button, that comes when editing.

[TheIdeasMan]

You need to make use of functions so you don't have repetitious code.

It might be useful to post the actual assignment text. Did they want you to use classes?