If statement re-do problem

**RoD** · 09-09-2002

Ok i took a problem from the book where i had to write a progrm that will take how much is in yer bank account, wether you want to deposit or w/drawl, then checks yer new balance. It accepts capital and lowercase "W" and "D", but i want it to re-prompt for a transaction type when it gets a invalid type. Which it DOES but not till after it asks for the transaction amount:

Code:

//Program file chkbook.cpp
//This program updates a checkbook
//9-9-02

#include <iostream.h>
#include <iomanip.h>

int main ()
{
	double startingbalance, endingbalance, transamount;
	char transtype;

	//Module for getting the data.

	cout<<"Enter the Starting Balance abd press <enter>: ";
	cin>>startingbalance;
	cout<<"Enter the Transaction Type (D) Deposit or (W) Withdrawl ";
	cout<<"And press <enter>: ";
	cin>>transtype;
	cout<<"Enter the transaction amount and press <enter>: ";
	cin>>transamount;

	//Module for performing computations.

	if (transtype == 'D')
		endingbalance = startingbalance + transamount;
	else if (transtype == 'd')
		endingbalance = startingbalance + transamount;
	else if (transtype == 'W')
		endingbalance = startingbalance - transamount;
	else if (transtype == 'w')
		endingbalance = startingbalance - transamount;
	else
		cout<<"Incorrect Transaction Type please re-enter "<<endl;
		cout<<"Enter the Transaction Type (D) Deposit or (W) Withdrawl ";
		cout<<"And press <enter>: ";
		cin>>transtype;
		

	//Module for displaying results

	cout<<setiosflags(ios::fixed | ios::showpoint | ios::right)<<setprecision(2);
	cout<<endl;
	cout<<"Starting Balance $"<<startingbalance<<endl;
	cout<<"Transaction      $"<<transamount<<" "<<transtype<<endl;
	cout<<"Ending Balance   $"<<endingbalance<<endl;

	return 0;

}

**sean345** · 09-09-2002

What you need to do is get the transaction typ, check and validate it is D, d, w or W and then get the transaction amount. If it is not a valid input then post a message and let them try again using a loop.

- Sean

**RoD** · 09-09-2002

so kinda like:

If transaction type not equal to letter reprompt.

I get that its how to do it. I'll figure it out in lunch tommorow i am beat i been doing different c++ scince 3rd period and i gotta tell ya, my vb oriented mind is hurt

**RoD** · 09-11-2002

i can't get it, i dunno why i cannot make this stupid if thingy work.

**Fordy** · 09-11-2002

Code:

//Program file chkbook.cpp
//This program updates a checkbook
//9-9-02

#include <iostream.h>
#include <iomanip.h>

int main ()
{
	double startingbalance, endingbalance, transamount;
	char transtype;

	cout<<"Enter the Starting Balance and press <enter>: ";
	cin>>startingbalance;

	//Module for getting the data.
	while (1){
		cout<<"Enter the Transaction Type (D) Deposit or (W) Withdrawl ";
		cout<<"And press <enter>: ";
		cin>>transtype;
		cout<<"Enter the transaction amount and press <enter>: ";
		cin>>transamount;

		//Module for performing computations.

		if(transtype == 'D' || transtype == 'd'){
			endingbalance = startingbalance + transamount;
			break;
		}
		else if(transtype == 'W' || transtype == 'w'){
			endingbalance = startingbalance - transamount;
			break;
		}
		else{
			cout << "Improper transaction type. Try again" << endl;
			continue;
		}
	}
	
	//Module for displaying results
	
	cout<<setiosflags(ios::fixed | ios::showpoint | ios::right)<<setprecision(2);
	cout<<endl;
	cout<<"Starting Balance $"<<startingbalance<<endl;
	cout<<"Transaction      $"<<transamount<<" "<<transtype<<endl;
	cout<<"Ending Balance   $"<<endingbalance<<endl;
	
	return 0;

}

**RoD** · 09-11-2002

omg thanks i get it now. I just needed to see it done a different way, thanks man.

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