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