C++ output error

[mugilan]

hi friends, I am doing some programming test from c++ book, about ATM machine,
i manage to complete the program but the output is not working.
i guess the main problem is on the output screen code.
so friend can you help me to fixed this prob, thanks.

       cout<<"\nTraction type of availalble";
            cout<<"\nO - open account";
            cout<<"\nD - deposit";
            cout<<"\nW - withdraw";
            cout<<"\nB - Balance";
            cout<<"\nX - Exit";
            cout<<"\nEnter choice :";
            cin>>transaction_type;

#include<iostream>
#include<ctype.h>

using namespace std;

class current
{
    int account_no;
    double balance;

public :

    void open_account();
    void deposit();
    void withdraw();
    void show_balance();

};

void current::open_account()
{
    cout<<"\nOpen current account....";
    cout<<"\n Enter account number :";
    cin>>account_no;
    cout<<"\n Enter starting amount :";
    cin>>balance;
}
void current::deposit()
{
    int acct_no;
    double amount;
    cout<<"\nDeposit into current account...";
    cout<<"\nEnter account number :";
    cin>>acct_no;

    if(acct_no != account_no)
    {
        cout<<"\n invalid account.Please try again";
    }
    else
    {
        cout<<"\nEnter amount to deposit : $";
        cin>>amount;
        balance =balance + amount;
        cout<<"\n Your new balance is $"<<balance;
    }
}

void current ::withdraw()
{
    int acct_no;
    double amount;
    cout<<"\nWithdraw from current account...";
    cout<<"\nEnter account number :";
    cin>>acct_no;

    if(acct_no != account_no)
    {
        cout<<"\n invalid account.Please try again";
    }
    else
    {
        cout<<"\nEnter amount to withdraw : $";
        cin>>amount;
        if(amount > balance)
        {

        cout<<"\n sorry, insufficient balance";
        }
        else
        {
            cout<<"\nPlease take your cash";
            balance = balance - amount;
            cout<<"\n Your new balance is $"<<balance;
        }
    }
}

void current::show_balance()
{
    int acct_no;
    cout<<"\n show current account balance ";
    cout<<"\n Enter your account number :";
    cin>>acct_no;

    if(acct_no ==account_no)
        cout<<"\n Your balance is S "<<balance;
    else
        cout<<"\n Invalid account. Please try again";
}

class saving
{
    int account_no;
    double balance;

public:
    void open_account();
    void deposit();
    void withdraw();
    void show_balance();
};

void saving::open_account()
{
    cout<<"\nOpen current account....";
    cout<<"\n Enter account number :";
    cin>>account_no;
    cout<<"\n Enter starting amount :";
    cin>>balance;
}

void saving ::deposit()
{
    int acct_no;
    double amount;
    cout<<"\nDeposit into saving account...";
    cout<<"\n Saving account deposit";
    cout<<"\nEnter account number :";
    cin>>acct_no;

    if(acct_no != account_no)
    {
        cout<<"\n invalid account.Please try again";
    }
    else
    {
        cout<<"\nEnter amount: $";
        cin>>amount;
        balance =balance + amount;
       // cout<<"\n Your new balance is $"<<balance;
    }
}
void saving ::withdraw()
{
    int acct_no;
    double amount;
    cout<<"\nWithdraw from saving account...";
    cout<<"\nEnter account number :";
    cin>>acct_no;

    if(acct_no == account_no)
    {
        cout<<"\nEnter amount to withdraw : $";
        cin>>amount;
        if(amount > balance)
        {

        cout<<"\n sorry, insufficient balance";
        }
        else
        {
            cout<<"\nPlease take your cash";
            balance = balance - amount;
            cout<<"\n Your new balance is $"<<balance;
        }
    }
}

void saving ::show_balance()
{
    int acct_no;
    cout<<"\n show Saving account balance ";
    cout<<"\n Enter your account number :";
    cin>>acct_no;

    if(acct_no ==account_no)
        cout<<"\n Your balance is S "<<balance;
    else
        cout<<"\n Invalid account. Please try again";
}

void main()
{
    current cur;
    saving sav;
    char transaction_type;
    char act_type;
    cout<<"welcome to UniBank :";

    for(;;)
    {
        while(1)
        {
            cout<<"\nTraction type of availalble";
            cout<<"\nO - open account";
            cout<<"\nD - deposit";
            cout<<"\nW - withdraw";
            cout<<"\nB - Balance";
            cout<<"\nX - Exit";
            cout<<"\nEnter choice :";
            cin>>transaction_type;

         //   transaction_type = toupper(transaction_type);

            if(transaction_type = 'X')
                return;
            if(transaction_type = 'O' || 'D' || 'W' || 'B')
                break;
            else
                cout<<"\n Invalid type. Please try again";
        }

        while(1)
        {
            cout<<"\n\n Account types availalble";
            cout<<"\nC - Current";
            cout<<"\nS - Saving";
            cout<<"\nX - Exit";
            cout<<"Please enter account type :";
            cin>> act_type;
            act_type = toupper(act_type);

            if(act_type =='X')
                return;
            if(act_type =='C' || 'S')
                break;
            else
                cout<<"\n Invalid type.please try again";
        }

 switch(transaction_type)
        {
        case 'O' :
            if(act_type == 'C')
                cur.open_account();
            else
                sav.open_account();
            break;
         

        case 'D' :

            if(act_type == 'C')
                cur.deposit();
            else
                sav.deposit();
                break;
          
        case 'W' :

            if(act_type =='C')
                cur.withdraw();
            else
                sav.withdraw();
            break;

        case 'B' :
            if(act_type == 'C')
                cur.show_balance();
            else
            sav.show_balance();
            break;

        case 'X' : break;

        default :

            cout<<"\n Invalid type.";
            cout<<"Please try again";

        }
        cout<<endl;
    }
}

[RedX]

That's one big output error.

What is the error? And please use code-tags (http://www.cplusplus.com/articles/firedraco1/).