windows C++ compiler option to link user define printf

[Mant]

Hi,
I have rewritten a printf function according to my usage and I want call my printf function instead the standard printf function during my project execution.
Can anybody tell me what is the windows C++ compiler option in Visual studio 2005, so that I can tell the windows compiler to use my printf function.

[Banfa]

You don't need one. If a function exists in both your code and the library the linker should default to using the code you provide.

[Mant]

I have a project written in C if I build it using Borland C++ compiler things are going on fine and if I build using Visual Studio compiler its not.

The scenario is,
I have a project which is in C, in one of the file I have redefined the printf function. Below

// This printf will write on to a file instead on stdout

// myfile.c
#define printf(format, ...) \
perprintf(forma t, __VA_ARGS__)

int perprintf (const char *format, ...)
{

va_list args;
FILE* fptr;
va_start (args, format);
fptr = fopen("C://TestPrintf.txt" , "at");

vfprintf(fptr, format, args);
fflush(fptr);

va_end(args);
fclose(fptr);
return 1;
}


//outsidefile.c
printf(msg);

If I call printf in the same file then its calling my printf function, printf's written outside this file are unable to call this printf function. And I expect my printf function to be called outside that file as well.

So I was wondering how to tell the outside files that the printf function is overrriden? and to use this printf at any point of time.