秒數轉換為天小時分鍾秒的格式

//num 為需要轉換的秒數
    //天數計算
    int days = (num)/(24*3600);

    //小時計算
    int hours = (num)%(24*3600)/3600;

    //分鍾計算
    int minutes = (num)%3600/60;

    //秒計算
    int second = (num)%60；