C程序推算你生日的日期

// c bir.cpp: 定义控制台应用程序的入口点。
//
#include<stdio.h>
#include "stdafx.h"
#include<iostream>
using namespace std;
int main()
{
    int date = 0;
    char answer;
    cout << "Is you birth date in this set ?" << endl;
    cout << "16 17 18 19
" <<
        "20 21 22 23
" <<
        "24 25 26 27
" <<
        "28 29 30 31" << endl;
    cout << "Enter N for No and Y for Yes:";
    cin >> answer;
    if (answer == 'y')
        date += 16;
    cout << "Is your birth date in this set?" << endl;
    cout << "8 9 10 11
" <<
        "12 13 14 15
" <<
        "24 25 26 27
" <<
        "28 29 30 31" << endl;
    cout << "Enter N for No and Y for Yes:";
    cin >> answer;
    if (answer == 'y')
        date += 8;
    cout << "Is your birth date in this set ?" << endl;
    cout << "1 3 5 7
" <<
        "9 11 13 15
" <<
        "17 19 21 23
" <<
        "25 27 29 31" << endl;
    cout << "Enter N for No and Y for Yes:";
    cin >> answer;
    if (answer == 'y')
        date += 1;
    cout << "Is your birth date in this set ?" << endl;
    cout << "2 3 6 7
" <<
        "16 11 14 15
" <<
        "18 19 22 23
" <<
        "26 27 30 31" << endl;
    cout << "Enter N for No and Y for Yes:";
    cin >> answer;
    if (answer == 'y')
        date += 2;
    cout << "Is your birth date in this set ?" << endl;
    cout << "4 5 6 7
" <<
        "12 13 14 15
" <<
        "20 21 22 23
" <<
        "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;
    system("pause");
}
//看你的生日日期在不在每次COUT里，在就是输入Y，不在输入N，循环5次，推算你的生日日期。挺准！