1 /*
2 * Copyright 2011, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <stdlib.h>
18 #include <stdio.h>
19 #include <time.h>
20
main()21 int main() {
22 srand(time(NULL));
23
24 unsigned int ans = rand() % 100;
25 unsigned int user = 100;
26 unsigned int left = 0;
27 unsigned int right = 99;
28
29 printf("Hello, droid! Let's play a number guessing game!\n");
30
31 while (user != ans) {
32 printf("Please input a number [%d-%d]:\n", left, right);
33
34 if (scanf("%u", &user) != 1) {
35 break;
36 }
37
38 if (user < left || user > right) {
39 /* Out of range, ignore this answer. */
40 continue;
41 } else if (user == ans) {
42 printf("You got it!\n");
43 break;
44 } else if (user < ans) {
45 left = user;
46 } else {
47 right = user;
48 }
49 }
50
51 return 0;
52 }
53