转自：http://www.oschina.net/code/snippet_10896_2907
[代码] GuessBirthDate.cpp
/** * 一段有趣的代码，猜生日。 * 运行程序，做5次选择，就能知道你的生日是哪一天。神奇！ */#includeusing namespace std;int main(){ int date = 0; // Date to be determind char answer; // Prompt the user for Set 1 cout << "Is your birth date in this set ?" << endl; cout << "16 17 18 19/n" << "20 21 22 23/n" << "24 25 26 27/n" << "28 29 30 31" << endl; cout << "Enter N for No and Y for Yes: "; cin >> answer; if (answer == 'Y') date += 16; // Prompt the user for Set 2 cout << "Is your birth date in this set ?" << endl; cout << " 8 9 10 11/n" << "12 13 14 15/n" << "24 25 26 27/n" << "28 29 30 31" << endl; cout << "Enter N for No and Y for Yes: "; cin >> answer; if (answer == 'Y') date += 8; // Prompt the user for Set 3 cout << "Is your birth date in this set ?" << endl; cout << " 1 3 5 7/n" << " 9 11 13 15/n" << "17 19 21 23/n" << "25 27 29 31" << endl; cout << "Enter N for No and Y for Yes: "; cin >> answer; if (answer == 'Y') date += 1; // Prompt the user for Set 4 cout << "Is your birth date in this set ?" << endl; cout << " 2 3 6 7/n" << "10 11 14 15/n" << "18 19 22 23/n" << "26 27 30 31" << endl; cout << "Enter N for No and Y for Yes: "; cin >> answer; if (answer == 'Y') date += 2; // Prompt the user for Set 5 cout << "Is your birth date in this set ?" << endl; cout << " 4 5 6 7/n" << "12 13 14 15/n" << "20 21 22 23/n" << "28 29 30 31" << endl; cout << "Enter N for No and Y for Yes: "; cin >> answer; if (answer == 'Y') date += 4; cout << "Your birth date is " << date << endl; return 0;}
[代码] 测试我的生日
david@xmimx:GuessBirthDate$ ./GuessBirthDate Is your birth date in this set ?16 17 18 1920 21 22 2324 25 26 2728 29 30 31Enter N for No and Y for Yes: NIs your birth date in this set ? 8 9 10 1112 13 14 1524 25 26 2728 29 30 31Enter N for No and Y for Yes: YIs your birth date in this set ? 1 3 5 7 9 11 13 1517 19 21 2325 27 29 31Enter N for No and Y for Yes: NIs your birth date in this set ? 2 3 6 710 11 14 1518 19 22 2326 27 30 31Enter N for No and Y for Yes: NIs your birth date in this set ? 4 5 6 712 13 14 1520 21 22 2328 29 30 31Enter N for No and Y for Yes: YYour birth date is 12