Problem bei der Dekleration von 2 Klassen

codyjack

hallo folgendes, wenn ich jenes ausführe meldet der Compiler immer "DateFormat has not been declared"
wie was wo hab ich denn da vergessen?

datum.h

#ifndef KALENDER_H_INCLUDED
#define KALENDER_H_INCLUDED
using namespace std;

class Date{
    private:
    int day,month,year;

    public:
    int getDayInYear();
    int getDayInMonth();
    int getWeekInYear();
    bool isLeapYear();
    string toString();
    Date(void);
    void setFormat(DateFormat f);

};

class DateFormat{
    private:
    string format(Date d);
    static Date parse(string s);

    public:
    DateFormat(void);

};

drakon

#ifndef KALENDER_H_INCLUDED
#define KALENDER_H_INCLUDED
using namespace std;

class DateFormat; //<-------------------

class Date{
    private:
    int day,month,year;

    public:
    int getDayInYear();
    int getDayInMonth();
    int getWeekInYear();
    bool isLeapYear();
    string toString();
    Date(void);
    void setFormat(const DateFormat & f); // <----------------

};

class DateFormat{
    private:
    string format(Date d);
    static Date parse(string s);

    public:
    DateFormat(void);

};

codyjack

ah danke, ist also genauso zu deklarieren wie ne Funktion