Thread: Postcode Validation

hi everyone im new to this programming,

just wondered, i have this code and does anyone know how i can modify it so it will validate a postcode.

Code:

#include <iostream>
// need cmath if using ceil() library function
#include <cmath>
using namespace std;

const char POUND = 156; // value to output a pound sign, e.g.
//	cout << POUND << "9" << endl;
// would output: £9.
// An alternative to this is to use the backslash sequence \234, e.g.
//	cout << "\2347" << endl;
// would output: £7

// function prototypes as given in the assignment script
bool isValidPostcode(char postcode[]);
float calculateCost( int numberOfBottles);
float calculateVAT( float cost);
float calculateDeliveryCharge(int numberOfBottles);
void displayOrder(char initials[], char surname[ ], char address[],
				  char postcode[], int numberOfBottles, float cost, 
                  float costPlusVAT, float deliveryCharge,
			      float totalCost );
bool enterAnotherOrder();


void main()
{

	// main program loop
	do
	{	
		// validation loop for post code
		do
		{
	
		} while(!isValidPostcode(postcode))
		
		calculateCost(numberOfBottles);

		calculateVAT(cost);
		
		calculateDeliveryCharge(numberOfBottles);
		
		displayOrder(initials, surname, address, postcode, numberOfBottles, cost,
			costPlusVAT, deliveryCharge, totalCost);
	} while(enterAnotherOrder());	
}

system("pause");
}

Thanks for your help

Thanks,

Do you or anyone know how i can start it off by checking to see if a user has inputted a letter or a number because i am really stuck?

Thanks for your help.

How come I've never heard of postcode?

EDIT: Ooops, nevermind. I get it now. I was thinking of something totally different.

grrrr, this postcode thing is doing ma head in, lol, i bet it is all basic stuff for you lot but im really finding it hard as you all can prob tell, lol

anyone else seen ma code n knw what i can do?

Thanks

Like I said before, divide the postcode up into Outcode and Incode before you do anything else.
you will have to do alot of string manipulation - read up on the C++ <string> library, it will make your life much easier (do not use char* for this unless you want a really hard time).

cool, think i might be gettin somewhere on it, just another question do how do u check to see if it is a letter going in or a number?