HPUX vprintf[3s]

 vprintf(3S)                                                     vprintf(3S)





 NAME
      vprintf(), vfprintf(), vsprintf() - print formatted output of a
      varargs argument list

 SYNOPSIS
      #include <stdio.h>
      #include <varargs.h>

      int vprintf(const char *format, va_list ap);

      int vfprintf(FILE *stream, const char *format, va_list ap);

      int vsprintf(char *s, const char *format, va_list ap);

 DESCRIPTION
      vprintf(), vfprintf(), and vsprintf() are the same as printf(),
      fprintf(), and sprintf() respectively, except that instead of being
      called with a variable number of arguments, they are called with an
      argument list as defined by varargs(5).

 EXAMPLE
      The following demonstrates how vfprintf() could be used to write an
      error routine:

           #include <stdio.h>
           #include <varargs.h>
                .
                .
                .
           /*
            *   error should be called using the form
            *        error(function_name, format, arg1, arg2...);
            */
           /*VARARGS0*/
           void
           error(va_alist)
           va_dcl
           {
                va_list args;
                char *fmt;

                va_start(args);

                /* print out name of function causing error */
                (void)fprintf(stderr, "ERROR in %s: ", va_arg(args, char *));
                fmt = va_arg(args, char *);

                /* print out remainder of message */
                (void)vfprintf(stderr, fmt, args);
                va_end(args);
                (void)abort( );



 Hewlett-Packard Company            - 1 -     HP-UX Release 9.0: August 1992






 vprintf(3S)                                                     vprintf(3S)





           }

 SEE ALSO
      setlocale(3C), printf(3S), varargs(5).

 STANDARDS CONFORMANCE
      vprintf(): AES, SVID2, XPG2, XPG3, XPG4, ANSI C

      vfprintf(): AES, SVID2, XPG2, XPG3, XPG4, ANSI C

      vsprintf(): AES, SVID2, XPG2, XPG3, XPG4, ANSI C











































 Hewlett-Packard Company            - 2 -     HP-UX Release 9.0: August 1992