1016. 計算天數

題目描述

輸入年份與月份，求該月共有多少天。

輸入

輸入兩個空格隔開的正整數year和month，分別表示年份和月份

輸出

輸出對應year這一年month這個月的天數。

樣例輸入

2000 2

樣例輸出

29

資料範圍限制

1000<=year<=3000,1<=month<=12

C++程式碼

#include <iostream>
#include <cassert>

using namespace std;

int main()
{
    int year,
 
 month, day;

    cin >> year >> month;

    assert(year >= 1000 && year <= 3000);
    assert(month >= 1 && month <= 12);

    switch(month)
    {
    case 1: day = 31; break;
    case 2: 
        if ((year%4 == 0 && year%100 != 0) || (year%400 == 0))
            day =
 
 29;  // Leap Year
        else
            day = 28;
        break;
    case 3: day = 31; break;
    case 4: day = 30; break;
    case 5: day = 31; break;
    case 6: day = 30; break;
    case 7: day = 31; break;
    case 8: day = 31; break;
    case 9: day = 30; break;
    case 10:day = 31; break;
    case
 
 11:day = 30; break;
    case 12:day = 31; break;
    default: break;
    }

    cout << day << endl;

    return 0;
}