萬年曆程式 - The Diigo Meta page

• 24 Jan 08
  

  York Jong

  C algorithm calendar

  •  int W[12]={6, 2, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4};

     

     int y, m, d, w;

     

     scanf("%d %d %d",&y, &m, &d);

     

     w=W[m-1]+y+(y/4)-(y/100)+(y/400);

     

     if( ((y%4)==0) && (m<3) ) {

     

       w--;

     

       if((y%100)==0) w++;

     

       if((y%400)==0) w--;

     

     }

     

     printf("%d ", (w+d)%7);
  • 我們輸入的年份要在  1583 以後才有用，否則算出來的答案是錯的

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