練習6-4－Quality of life is not what you get but what you become

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/****************************************************************************
練習6-4：閏年的定義為可被4整除而不可被100整除的年份，或者能被400整除的年份。*
請寫一個程式，來判斷某一年是否為閏年。　　　　　　　　　　　　　 *
****************************************************************************/
#include <iostream>
#include <string>
//---------------------------------------------------------------------------
int year;

int main(int argc, char* argv[])
{
std::cout << "Enter year,system will tell you whether it is bissextile "
<< "or not: \n";

        std::cin >> year;
        if (year%4000==0)
        {
          std::cout << year << " is not bissextile\n";
          std::system("pause");
          return 0;
        }
        else if (year%400==0)
        {
          std::cout << year << " is bissextile\n";
          std::system("pause");
          return 0;
        }
        else if (year%4==0 && year%100!=0)
            std::cout << year << " is bissextile\n";
        else
            std::cout << year << " is not bissextile\n";

std::system("pause");
return 0;
}
//---------------------------------------------------------------------------

題目來源：C++風格與藝術第二版 Steve Oualline 著黃吉霈編譯
答案來源：自我撰寫(不保證正確喔)