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vprintf
vfprintf
vsprintf

Usage

   #include <stdio.h>
   #include <stdarg.h>
   int vfprintf(FILE *stream,const char *format, va_list arg_ptr);
   int vprintf(const char *format,va_list arg_ptr);
   int vsprintf(char *buffer,const char *format, va_list arg_ptr);

   ANSI

Description

   These functions are all similar to their counterparts printf(), fprintf()
   and sprintf() except the data is taken from the va_list arg_ptr. See
   fprintf for a description of the format commands.

Example 

   #include <stdarg.h>
   #include <stdio.h>
   #include <stdlib.h>

   varprint(char *format,...)
   {
       va_list arg_ptr;
       va_start(arg_ptr,format);
       vprintf(format,arg_ptr);
       va_end(arg_ptr);
   }

   int main()
   {

       char *string = "STRING";
       int hnum = 0xb000;
       varprint("Call with a %s parm and a %x hex parm\n",
               string,hnum);
       varprint("Or with no parms\n");
       return EXIT_SUCCESS;
   }

Return Value

   The number of characters written if successful, or a negative number on
   error.

See Also

   fprintf, printf, sprintf