Re: [Dev-C++] FunctionCalling()

[Brenden T. <br...@rc...>]

Holy poop, batman! This is the worst idea ever!

Daniel Glenfield wrote:

> You have to use forward declaration.


Correct.

> Or type them all out in to a header file, then #include it. 


No! Never!  That is NOT a forward declaration!

Only put the prototype in the header file:
//Functions.h
void functionTwo( void );

Then include just the headers in the main program:
//main.cpp
#include <iostream>
#include "Functions.h"

void functionOne( void )
{
    // ...
}

void functionTwo( void )
{
    // ...
}

// end main.cpp

When you have functions like this, in one source file, it's common just 
to put the prototype in the beginning of that source file and not use a 
header file.  However, you often need to call functions elsewhere, so 
it's not bad to get in the habit of putting the prototypes in a header file.

My 2 pence!
Peace, B.

>
>
> // in the header file (Functions.h)
>
> int FunctionTwo( int Input )
> {
>   Input = 365;
>   return Input;
> }
>
>
> // in the main (.cpp) file
> #include <iostream.h>
> #include "Functions.h"
>
>
> int main()
> {
>   int Input = 0;
>   FunctionTwo( Input );
>   cout << "End";
>   return 0;
> }
>
>
> P.S. I know that's not the greatest example of coding, but I'm keeping 
> it simple as I got confused by examples when I started.
>
> If you need help, post again!
>
>
>
>> From: Dondolo Mpho <MDo...@OL...>
>> To: 'dev-cpp-users-list' <dev...@li...>
>> Subject: [Dev-C++] FunctionCalling()
>> Date: Fri, 6 Dec 2002 13:05:20 +0200
>>
>> Hi all,
>>
>> I am in the process of learning C++. I have been practising, writing 
>> my own
>> functions and using main() only to call those function. I also use those
>> functions to call up other function....
>>
>> //e.g.: function (1)
>>
>> void FuctionOne(void)
>> {
>> int Answer
>> cout<<"Are you ready...<press 1 for yes and 2 for no>  ";
>> cin>>Answer;
>>     if(Answer==1)
>>  {
>> cout<<"\nI am glad that you are";
>> }
>>
>> else
>>   {
>>     FuctionTwo();
>>    }
>>
>> }
>>
>> //Here I have my
>> //FunctionTwo
>>
>>                                     Now I find that the compiler 
>> flags an
>> error msg that FunctionTwo has not been declared. it only works when 
>> I take
>> FunctionTwo() and put it on top of
>>                                      FunctionOne()....i am I doing 
>> something
>> wrong? The thing is I might decide halfway through my functions That 
>> i want
>> function x to call function
>>                                       y. Now If i have to readjust my
>> functions half way through, i will loose track of what I am 
>> doing.....Please
>> help anybody
>>
>>
>> Mpho Dondolo
>> Support Analyst
>> CSC Computer Sciences (South Africa) (Pty) Ltd
>> Tel:  +27 21 503030164
>> cell: +27 84 3371468
>> Fax: +27 21 5095619
>> Email:MDo...@ol...
>> Email: MDo...@cs...
>>
>>
>
>
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