call to undefined function...

how come it cant find it...

This is select.h with the menu function:

Code:

#ifndef _SELECT_H
#define _SELECT_H

#include "center.h"
#include "choice.h"


void menu(double winning_amount, double total,double &nettotal)
{
   int ch;
   time_t t=time(NULL);
   cout <<ctime(&t) << endl;
   cout << endl;
	center("Shopping Spree Program",3);
   center("~~~~~~~~~~~~~~~~~~~~~~",4);
   cout << endl;
   cout << "a.\tComputer Shop" << endl;
   cout << "b.\tTotal" << endl;
   cout << "c.\tQuit" << endl;
 	for(/*forever*/;((ch = getch()) != EOF);)
   switch(ch)
   {
   case 'a' :
   	choicecomp(winning_amount,total,nettotal);
   	break;
   default :
   	cout << "Bye Bye" << endl;
      getch();
      break;
   }

}

#endif

It says the error in the following section, this is choice.h:

Code:

#ifndef _CHOICE_H
#define _CHOICE_H

#include "select.h"
#include <iostream.h>
#include <conio.h>
#include "center.h"
#include <time.h>


void choicecomp(double winning_amount, double total,double &nettotal)
{
   double CompChoice;
   do
   {

	time_t t=time(NULL);
   center("Shopping Paradise - Winner's Circle",3);
   center("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~",4);
   cout <<" 1.\tHard Drive" << endl;
   cout <<" 2.\tFloppy Disk" << endl;
   cout <<" 3.\tCD Burner " << endl;
   cout <<" 4.\tBlank CDs " << endl;
   cout <<" 5.\tMonitor " << endl;
   cout <<" 6.\tSpeakers" << endl;
   cout <<" 7.\tVideo Card" << endl;
   cout <<" 8.\tGlass Case" << endl;
   cout <<" 9.\tWireless Keyboard" << endl;
   cout <<"10.\tWireless Mouse " << endl;
   cout <<"11.\tComputer Table " << endl;
   cout <<"12.\tWindows XP Home " << endl;
   cout <<"13.\tMotherboard " << endl;
   cout <<"14.\tRogers @Home Starter Kit " << endl;
   cout <<"15.\tMicrosoft Works XP" << endl;
   cout <<"16.\tBorland C++ v. 6.0" << endl;
   cout <<"17.\tRouter" << endl;
   cout <<"18.\tNetwork Hub + Ethernet Card" << endl;
   cout << endl;
   cout <<"What is your choice : ";
   cin >> CompChoice;
   if(CompChoice == 19)
             menu(winning_amount,total,nettotal);  <-- It cant find
   if(CompChoice == 1)
     	total = total - 50;
   else if(CompChoice == 2)
     	total = total - 5;
   else if(CompChoice == 3)
     	total = total - 100;
   else if(CompChoice == 4)
     	total = total - 10;
   else if(CompChoice == 5)
     	total = total - 40;
   else if(CompChoice == 6)
     	total = total - 90;
   else if(CompChoice == 7)
     	total = total - 80;
   else if(CompChoice == 8)
     	total = total - 130;
   else if(CompChoice == 9)
     	total = total - 20;
   else if(CompChoice == 10)
     	total = total - 25;
   else if(CompChoice == 11)
     	total = total - 175;
   else if(CompChoice == 12)
     	total = total - 200;
   else if(CompChoice == 13)
     	total = total - 10;
   else if(CompChoice == 14)
     	total = total - 15;
   else if(CompChoice == 15)
     	total = total - 30;
   else if(CompChoice == 16)
     	total = total - 21;
   else if(CompChoice == 17)
     	total = total - 19;
   else if(CompChoice == 18)
     	total = total - 82;
   else
      	cout << "Sorry, That is an Invalid Selection..." << endl;
	clrscr();

   cout<<total;
   }
	while(total > 0);

   total = nettotal;



}

#endif

I dont understand why it doesn't work... any help would GREATLY be appreciated

You need to specify a function prototype for each function

the other ones work without prototypes...

i dont know what prototypes are so could someone write one where i need it for the libraries i have posted please.

This is as obscure as you can get, but how did 'menu()' get by the compiler when using 'getch()' requires <conio.h>?

Offhand, I'd say that's the only inconsistency that I can spot in the code you've provided.

Addendum: This would serve as a 'prototype':

void menu(double, double, double&);

(Having said that, I've seen code that will not execute without including variable names with the prototype, i.e. 'void menu(double x, double y, double& z);'. The variables don't have to match what you pass to the function, but must be included in the prototype (declaration).)

-Skipper