2.9BSD - /usr/src/cmd/learn/learn.c

   1: #include "stdio.h"
   2: #include "lrndef"
   3: #include "lrnref"
   4: #include "signal.h"
   5: 
   6: main(argc,argv)
   7: char *argv[];
   8: {
   9:     extern hangup(), intrpt();
  10:     extern char * getlogin();
  11:     extern char _sobuf;
  12:     char *malloc();
  13: 
  14:     speed = 0;
  15:     more = 1;
  16:     pwline = getlogin();
  17:     setbuf(stdout, _sobuf);
  18:     selsub(argc, argv);
  19:     signal(SIGHUP, hangup);
  20:     signal(SIGINT, intrpt);
  21:     while (more) {
  22:         selunit();
  23:         dounit();
  24:         whatnow();
  25:     }
  26:     wrapup(0);
  27: }
  28: 
  29: hangup()
  30: {
  31:     wrapup(1);
  32: }
  33: 
  34: intrpt()
  35: {
  36:     char response[20], *p;
  37: 
  38:     signal(SIGINT, hangup);
  39:     write(2, "\nInterrupt.\nWant to go on?  ", 28);
  40:     p = response;
  41:     *p = 'n';
  42:     while (read(0, p, 1) == 1 && *p != '\n')
  43:         p++;
  44:     if (response[0] != 'y')
  45:         wrapup(1);
  46:     ungetc('\n', stdin);
  47:     signal(SIGINT, intrpt);
  48: }

Defined functions