I'm using DevC++ and im trying to call a function that is written in another '.c' file that is included in the project
umm heres an example of what im trying to do.
~MAIN.C~
~FUNC.C~Code:#include <stdio.h> #include "func.c" int main() { callprint("hello world!"); getchar(); return 0; }//end of main
Code:#include <stdio.h> void callprint(char text[]) { printf(text); }
it keeps comming up with multi definition of callprint(char text[])
You never include .c files, you include .h files.
func.h:
func.c:Code:#ifndef __FUNC_H__ #define __FUNC_H__ void callprint(char text[]); #endif
main.c:Code:#include <stdio.h> void callprint(char text[]) { printf(text); }
Code:#include <stdio.h> #include "func.h" int main() { callprint("hello world!"); getchar(); return 0; }//end of main
> it keeps comming up with multi definition of callprint(char text[])
That's because you #include the source code (that's one copy), and you also compile it as a separate file (that's two).
Do as rags_to_riches says and create a header file.
Oh, and
printf(text);
is extremely dangerous.
If you make the mistake of passing a string with formats (like %d), then the call to printf becomes undefined (no extra parameters you see).
Use fputs() in this instance, or perhaps
printf("%s",text);
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
