'defaultHealthCalc' is not a member of 'GameStuff'

[8Observer8]

Hello!

Why I received this message:

GameCharacter.h:13: error: 'defaultHealthCalc' is not a member of 'GameStuff'
explicit GameCharacter( std::string name, HealthCalcFunc hcf = GameStuff::defaultHealthCalc )

There are all my files. Please, help me!

GameCharacter.h

#ifndef GAMECHARACTER_H
#define GAMECHARACTER_H
 
#include <string>
#include "functionsForHealthCalc.h"
 
namespace GameStuff {
 
    class GameCharacter {
    public:
        typedef int (*HealthCalcFunc)(const GameCharacter&);
 
        explicit GameCharacter( std::string name, HealthCalcFunc hcf = GameStuff::defaultHealthCalc )
        {
        }
 
    };
}
 
#endif // GAMECHARACTER_H

#ifndef GAMECHARACTER_H
#define GAMECHARACTER_H

#include <string>
#include "functionsForHealthCalc.h"

namespace GameStuff {

    class GameCharacter {
    public:
        typedef int (*HealthCalcFunc)(const GameCharacter&);

        explicit GameCharacter( std::string name, HealthCalcFunc hcf = GameStuff::defaultHealthCalc )
        {
        }

    };
}

#endif // GAMECHARACTER_H

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functionsForHealthCalc.h

#ifndef FUNCTIONS_FOR_HEALTHCALC_H
#define FUNCTIONS_FOR_HEALTHCALC_H
 
#include "GameCharacter.h"
 
namespace GameStuff {
 
    class GameCharacter;
 
    int defaultHealthCalc( const GameCharacter& gc );
}
 
#endif // FUNCTIONS_FOR_HEALTHCALC_H

#ifndef FUNCTIONS_FOR_HEALTHCALC_H
#define FUNCTIONS_FOR_HEALTHCALC_H

#include "GameCharacter.h"

namespace GameStuff {

    class GameCharacter;

    int defaultHealthCalc( const GameCharacter& gc );
}

#endif // FUNCTIONS_FOR_HEALTHCALC_H

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functionsForHealthCalc.cpp

#include "functionsForHealthCalc.h"
 
namespace GameStuff {
 
    int defaultHealthCalc( const GameCharacter& gc ) {
        return 1;
    }
}

#include "functionsForHealthCalc.h"

namespace GameStuff {

    int defaultHealthCalc( const GameCharacter& gc ) {
        return 1;
    }
}

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Question.pro

SOURCES += \
    main.cpp \
    functionsForHealthCalc.cpp
 
HEADERS += \
    GameCharacter.h \
    functionsForHealthCalc.h

SOURCES += \
    main.cpp \
    functionsForHealthCalc.cpp

HEADERS += \
    GameCharacter.h \
    functionsForHealthCalc.h

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main.cpp

#include <iostream>
 
int main() {
 
    return 0;
}

#include <iostream>

int main() {

    return 0;
}

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[ChrisW67]

Try removing line 4 from functionsForHealthCalc.h. Line 8 makes the include is unnecessary

When the compiler is given functionsForHealthCalc.cpp to compile it includes GameCharacter.h before it declares defaultHealthCalc(). GameCharacter.h tries to reference defaultHealthCalc() which has not yet been declared.

[8Observer8]

Thank you very much!