UNIX 7th Ed. - /usr/src/libc/stdio/printf.c

   1: #include    <stdio.h>
   2: 
   3: printf(fmt, args)
   4: char *fmt;
   5: {
   6:     _doprnt(fmt, &args, stdout);
   7:     return(ferror(stdout)? EOF: 0);
   8: }

Defined functions