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Function Prototyping

 
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Jim C Ashby



Joined: 08 Nov 2005
Posts: 5

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Function Prototyping
PostPosted: Wed Nov 09, 2005 10:48 am     Reply with quote

I just upgraded to the latest Compiler and I started getting errors that all of my function prototype were already defined.

I // out all of the function prototypes in my main C code, and the error went away.

Question: Is it no longer needed to declare function prototype as long as we use the #include command to include the various files which contain the funtions?
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Wed Nov 09, 2005 11:11 am     Reply with quote

Quote:

I just upgraded to the latest Compiler and I started getting errors that all
of my function prototype were already defined.


Were you typing in function prototypes of the CCS built-in functions?
You don't need to do that.

Were you typing in function prototypes of functions that are in the
various CCS driver files ?
You don't need to do that, either. Just #include the driver files above
main(), right after all your #use() and other pre-processor statements.


If this doesn't answer your question, then give more specific details
about the error messages.
Jim C Ashby



Joined: 08 Nov 2005
Posts: 5

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PostPosted: Wed Nov 09, 2005 11:28 am     Reply with quote

I created my own functions and placed them in my own files.
file named menu1100.c containes the funcrion menu_1100() which executes a menu system.

In my Main.c program I had in the past needed to place a function prototype suach as void menu_1100(); and place #include "menu1100.c" above the prototype all above the main() section of the code.

Once I upgraded to the lastest version, I received error messages when the void menu_1100(); was in the main.c file.

I had to remove the function prototyping, all of them.
PCM programmer



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PostPosted: Wed Nov 09, 2005 12:26 pm     Reply with quote

Quote:

In my Main.c program I had in the past needed to place a function
prototype such as void menu_1100(); and place #include "menu1100.c"
above the prototype all above the main() section of the code.

Based on your explanation, I assume you're doing it as shown in the
code below. I don't know why you would have to put the function
prototype below the #include line. When the compiler loads the
include file, it's going to see the function definition. I can't see why
you would need the prototype.

Question: What previous version of the compiler were you using ?

Quote:

#include "Temp.c" // This file has the menu_1100() function in it

void menu_1100(); // This line should not be needed

//=========================
void main()
{

menu_1100();

while(1);
}
Jim C Ashby



Joined: 08 Nov 2005
Posts: 5

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PostPosted: Wed Nov 09, 2005 2:56 pm     Reply with quote

I updated my maintanence contract about a month or so ago, and when I received the CDROM 3.235.23.16 it did not give me an error, only when I updated to the 3.237.7.16 version did I start getting this error.


I have resolved the problem and I do appreciate the automatic nature of the #include statement I just hope that others are aware of this issue if they have created code a long time ago and find that it no longer compiles witout errors any longer.
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