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ERROR L104: MULTIPLE PUBLIC DEFINITIONS

Hemraj Chouhan

I am two C files in a project.
1. main.c
2. rtc.c and third one is header file for both in which all prototypes are defined.

I want to use a bit variables named aon and aoff in both files.
Now three condition arises

1. i declare extern bit aon,aoff; in header file but it gives error

//ERROR L104: MULTIPLE PUBLIC DEFINITIONSERROR L104: MULTIPLE PUBLIC DEFINITIONSERROR L104: MULTIPLE PUBLIC DEFINITIONSextern bit aon=0,aoff=0;

2. i declare extern bit aon,aoff; in onlyin main file but it gives error

aon and aoff not declared in rtc; and vice versa

3. i declare in both c files than again i gives error

//ERROR L104: MULTIPLE PUBLIC DEFINITIONSERROR L104: MULTIPLE PUBLIC DEFINITIONSERROR L104: MULTIPLE PUBLIC DEFINITIONSextern bit aon=0,aoff=0;

Why?

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    Hello!.
    Maybe this help to you.
    Define the variables as follows in main.h or main.c

    unsigned long var1;
unsigned long var2;


    in othe header file where you need to define this variable define as follows

    extern unsigned long var1;
extern unsigned long var2;

    Sorry for my english.:)
    With best regards Artem Gusev.

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  • 0

    Hello!.
    Maybe this help to you.
    Define the variables as follows in main.h or main.c

    unsigned long var1;
unsigned long var2;


    in othe header file where you need to define this variable define as follows

    extern unsigned long var1;
extern unsigned long var2;

    Sorry for my english.:)
    With best regards Artem Gusev.

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