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Linking 2 files.

 
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  #1
Oct 5th, 2006
Hi!

I have functions defined in ami.c and want to call them from friedman.c how do I link the 2?

Thanks
Ami
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Re: Linking 2 files.

 
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  #2
Oct 5th, 2006
What compiler are you using?
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Re: Linking 2 files.

 
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  #3
Oct 5th, 2006
Borland C++ 3.1
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Re: Linking 2 files.

 
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  #4
Oct 5th, 2006
C Syntax (Toggle Plain Text) 
  1. C:\>bcc ami.c freidman.c
But that'll only work if freidman.c includes declarations for the functions. Otherwise it won't compile because it doesn't know that the functions exist. You can declare them directly or use a header file. The better way is to use a header file.
C Syntax (Toggle Plain Text) 
  1. /* ami.h */
  2. #ifndef AMI
  3. #define AMI
  4.  
  5. void function(void);
  6.  
  7. #endif
C Syntax (Toggle Plain Text) 
  1. /* ami.c */
  2. #include "ami.h"
  3.  
  4. void function(void)
  5. {
  6.   /* ... */
  7. }
C Syntax (Toggle Plain Text) 
  1. /* freidman.c */
  2. #include "ami.h"
  3.  
  4. int main(void)
  5. {
  6.   function();
  7.   return 0;
  8. }
Last edited by Inanna; Oct 5th, 2006 at 8:13 pm.
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Re: Linking 2 files.

 
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  #5
Oct 5th, 2006
Yea I know I need to declare.
Where exactly do I type:
C Syntax (Toggle Plain Text) 
  1. C:\>bcc ami.c freidman.c

Thanks
Ami
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Re: Linking 2 files.

 
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  #6
Oct 5th, 2006
At the command prompt. The path from the start button is something like Start->Programs->Accessories->Command Prompt.
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Re: Linking 2 files.

 
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  #7
Oct 5th, 2006
Yea that's what I thought.
I tried it it didn't recognize bcc.
I tried to go to the specific file directory and even the BorlanC directory. None of them worked.

I must be doing something worng.
Thanks
Ami
Last edited by amishosh; Oct 5th, 2006 at 9:14 pm.
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Re: Linking 2 files.

 
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  #8
Oct 5th, 2006
I'm prolly forgetting the name of the executable. It might be bcc16 or bcc32 as well. Check the bin directory of where you installed the compiler and you'll see it.
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Re: Linking 2 files.

 
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  #9
Oct 5th, 2006
Ok!
Yes it IS bcc.
I put the 2 files in the same directory as BIN and then ran:
C Syntax (Toggle Plain Text) 
  1. bcc file1.c file2.c
It opened a MS-DOS (Im using Win XP) window for a sec and closed. I assume it did something.
Now in file 2 I have this:
C Syntax (Toggle Plain Text) 
  1. /* file2.c */
  2. #include <stdio.h>
  3. int main()
  4. {
  5. extern int i;
  6. /* get_j(void) is in file1.c */
  7. int get_j(void);
  8.  
  9.  
  10. printf("i == %d\n", ++i);
  11. printf("j == %d\n", get_j());
  12. return 0;
  13. }

It doesnt recognize "get_j". I diclared get_j in file1.c
Any idea why?

Thanks
Ami
Last edited by amishosh; Oct 5th, 2006 at 9:27 pm.
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Re: Linking 2 files.

 
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  #10
Oct 5th, 2006
Just a hunch, but try this and paste the error that you get.
C Syntax (Toggle Plain Text) 
  1. /* file2.c */
  2. #include <stdio.h>
  3.  
  4. int get_j(void);
  5.  
  6. int main()
  7. {
  8.   extern int i;
  9.  
  10.   printf("i == %d\n", ++i);
  11.   printf("j == %d\n", get_j());
  12.  
  13.   return 0;
  14. }
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