$NetBSD: patch-cmdline_c,v 1.1 2011/05/28 22:41:43 dholland Exp $

- declare external functions
- improve input prompting
- don't use gets

--- cmdline.c.orig	1997-07-27 21:14:18.000000000 +0000
+++ cmdline.c
@@ -16,6 +16,7 @@
 #include <stdio.h>
 
 #include "connect4.h"
+#include "proto.h"
 
 // Here's the interface for sending positions to velena engine
 // positions are passed in a C string in the form of: x+y+'0'
@@ -42,16 +43,19 @@ void command_line_input(struct board *bo
    int flag = 1,answer;
    char st[80];
 
-   printf("Enter positions in the form x+y+'0', where:\n");
+   setvbuf(stdout, NULL, _IONBF, 0);
+   printf("Enter positions in the form xy0, where:\n");
    printf("x is the level of play: 'a' = weak, 'b' = normal, 'c' = strong\n");
    printf("y is a sequence of moves that brings to the position you want\n");
    printf("  (columns are numbered from 1 to 7)\n");
    printf("'0' is the 48 ASCII char which tells Velena where the string ends\n"); 
+   printf("Example: c4444350\n");
    printf("\nEnter 'q' to quit\n\n");
 
      do {
         printf(">");   // Waiting for the user to enter the string
-        gets(st);
+        if (fgets(st, sizeof(st), stdin) == NULL)
+            break;
 
         if(st[0]=='q') flag = 0;   // if the string begins with 'q' we quit.
         else {