UNIX 6th Ed. - /usr/source/s1/echo.c

   1: main(argc, argv)
   2: int argc;
   3: char *argv[];
   4: {
   5:     int i;
   6: 
   7:     argc--;
   8:     for(i=1; i<=argc; i++)
   9:         printf("%s%c", argv[i], i==argc? '\n': ' ');
  10: }

Defined functions