I need help with a date class.
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Thread: I need help with a date class.

  1. #1
    Join Date
    Jan 2009
    Posts
    24

    Exclamation I need help with a date class.

    I need help with this code:

    Code:
    #ifndef DATE_H
    #define DATE_H
    
    #include <iostream>
    #include <string>
    
    using namespace std;
    
    class date
      {
        private:
          enum m_e_month                    //member enumeration named month
          {
            January=1,
            Febuary=2,
            March=3,
            April=4,
            May=5,
            June=6,
            July=7,
            August=8,
            September=9,
            October=10,
            November=11,
            December=12
          };
          m_e_month m_m_e_month_month;                    //its a member variable m_ of type (m_e_month) named month
          unsigned short int m_sh_I_year;
          unsigned short int m_sh_I_day;
          void makeyear()
            {
              cout<<"enter the year:";
              int a;
              cin>>a;
    
            }
          void makemonth()
            {
              bool redo=1;
              cout<<"Enter the month's name it must be capitalied.";
              while(redo)
                {
                  string tmonth="0";
                  cin>>tmonth;                    //It set to 0 so is assumes nothings going to happen. If it weren't here thaen and infinite loop would start.
                  redo=0;                   //I have to use if and elses because switchs don't work with emums.
                  if(tmonth=="January")
                      {m_m_e_month_month=January;}
                  else if(tmonth=="Febuary")
                      {m_m_e_month_month=Febuary;}
                  else if(tmonth=="March")
                      {m_m_e_month_month=March;}
                  else if(tmonth=="April")
                      {m_m_e_month_month=April;}
                  else if(tmonth=="May")
                      {m_m_e_month_month=May;}
                  else if(tmonth=="June")
                      {m_m_e_month_month=June;}
                  else if(tmonth=="July")
                      {m_m_e_month_month=July;}
                  else if(tmonth=="August")
                      {m_m_e_month_month=August;}
                  else if(tmonth=="September")
                      {m_m_e_month_month=September;}
                  else if(tmonth=="October")
                      {m_m_e_month_month=October;}
                  else if(tmonth=="November")
                      {m_m_e_month_month=November;}
                  else if(tmonth=="December")
                      {m_m_e_month_month=December;}
                  else
                      {redo=1;cout<<"invalad please try again:";}
                }
            }
          void makeday()
            {
              int numofdays;
              int placeholder;
              placeholder=m_m_e_month_month;                    //again I can't use a switch statement due to repetitivness and it is not compatible
              if ((placeholder==1)||(placeholder==3)||(placeholder==5)||(placeholder==7)||(placeholder==8)||(placeholder==10)||(placeholder==12))
                {
                  numofdays=31;
                }
              else if ((placeholder==2))                    //this is just for febuary.
                {
                  numofdays=28;
                  if(m_sh_I_year&#37;4==0)                    //febuary has leap years
                    {
                      numofdays=29;
                    }
                }
              else
                {
                  numofdays=30;                   //this is for all the other months
                }
              m_sh_I_day=0;                    //this is so the so while loop doesn't show the invalad thingy.
              do
                {
                  if (m_sh_I_day>numofdays)
                    {
                      cout<<"invalad. try again.";
                    }
                  cout<<"enter the day(number)";
                  cin>>m_sh_I_day;
                }while(m_sh_I_day>numofdays);
            }
        public:
          date(int a=0, m_e_month b=January, int c=-1)
            {
              m_sh_I_year=a;
              m_m_e_month_month=b;
              m_sh_I_day=c;
            }
          friend &ostream operator<<(ostream &out, date &adate);
          friend &istream operator>>(istream &in, date &adate);
      };
    
    &ostream operator<<(ostream &out, date &adate)
      {
        out<<adate.m_m_e_month_month<<"/"<<adate.m_sh_I_day<<"/"<<adate.m_sh_I_year;
        return out;
      }
    
    &istream operator>>(istream &in, date &adate)
      {
        adate.makeyear();
        adate.makemonth();
        adate.makeday();
      }
    
    #endif
    when I try to compile it I get these bugs

    ISO C++ forbids declaration of `ostream' with no type
    `ostream' is neither function nor member function; cannot be declared friend
    expected `;' before "operator"
    ISO C++ forbids declaration of `istream' with no type
    `istream' is neither function nor member function; cannot be declared friend
    expected `;' before "operator"
    expected constructor, destructor, or type conversion before "operator"
    expected constructor, destructor, or type conversion before "operator"
    Last edited by E-man96; February 13th, 2009 at 01:52 AM.

  2. #2
    Join Date
    Jan 2006
    Location
    Singapore
    Posts
    6,194

    Re: I need help with a date class.

    Instead of &ostream, write ostream& since you are declaring that the function returns a reference to an ostream, not trying to take the address of ostream (which does not make sense). The same goes for istream. Also, the overloaded operator<< should take the date object by const reference.
    C + C++ Compiler: MinGW port of GCC
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