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Constructors: No Matching function for call error

This is a discussion on Constructors: No Matching function for call error within the C++ Programming forums, part of the General Programming Boards category; Hi, This is probably gonna be something really simple! but please help.. The problem seems to be with the Registration ...

  1. #1
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    Constructors: No Matching function for call error

    Hi,

    This is probably gonna be something really simple! but please help..

    The problem seems to be with the Registration constructor. I get a candidates are Person::Person(QString,QString,QString)

    I thought that was what I was doing! Umm, there are no default constructors

    I have the following headers:

    Code:
    class Person
    {
    public:
    
    Person(QString,QString,QString);
    QString getName();
    QString getEmail();
    QString getAffiliation();
    QString toString();
    private:
    QString m_Name;
    QString m_Email;
    QString m_Affiliation;
    
    };
    class Registration: public Person
    {
    public:
    Registration(QString,QString,QString);
    Person getAttendee();
    QDate getBookingDate();
    double calculateFee();
    QString toString()const;
    private:
    Person m_Attendee;
    QDate m_BookingDate;
    static const double STANDARD_FEE;
    };
    
    and the constructors look like this

    Code:
    Person::Person(QString n,QString e,QString a)
    {
    m_Name=n;
    m_Email=e;
    m_Affiliation=a;
    }Registration::Registration(QString n,QString e,QString a) : m_Attendee(n,e,a)
    {
    m_BookingDate=QDate::currentDate();
    }

  2. #2
    C++まいる!Cをこわせ! Elysia's Avatar
    Join Date
    Oct 2007
    Posts
    22,413
    Based on your code, I suggest:
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  3. #3
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    Also when you get compiler errors post the complete error messages, exactly as they appear in your development environment. These messages have important information to aid in location and repair of the problem.

    Jim

  4. #4
    Registered User hk_mp5kpdw's Avatar
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    Your Registration class is both derived from and contains a Person object? I would think you'd want one or the other but not both. Change Registration class so it is not derived from a Person object and you should be OK.
    iMalc likes this.
    "Owners of dogs will have noticed that, if you provide them with food and water and shelter and affection, they will think you are god. Whereas owners of cats are compelled to realize that, if you provide them with food and water and shelter and affection, they draw the conclusion that they are gods."
    -Christopher Hitchens

  5. #5
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    Hi,

    - Sorry indentations disappeared with copy and paste..
    - I agree on the param names, the question was using them
    - I have been reading up on initializer lists, but guess I'm missing something?
    - point taken on parameter names

    Here is updated code
    Code:
    classPerson
    {
    public:
    
    Person(QStringname,QStringemail,QStringaffiliation);
    QStringgetName();
    QStringgetEmail();
    QStringgetAffiliation();
    QStringtoString();
    private:
    QStringm_Name;
    QStringm_Email;
    QStringm_Affiliation;
    
    };
    classRegistration:publicPerson
    {
    public:
    Registration(QStringname,QStringemail,QStringaffiliation);
    PersongetAttendee();
    QDategetBookingDate();
    doublecalculateFee();
    QStringtoString()const;
    private:
    Personm_Attendee;
    QDatem_BookingDate;
    staticconstdoubleSTANDARD_FEE;
    };
    Person::Person(QStringname,QStringemail,QStringaffiliation)
    {
    m_Name=name;
    m_Email=email;
    m_Affiliation=affiliation;
    }
    
    Registration::Registration(QStringname,QStringemail,QStringaffiliation):m_Attendee(name,email,affiliation)
    {
    m_BookingDate=QDate::currentDate();
    }

  6. #6
    Registered User
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    Quote Originally Posted by hk_mp5kpdw View Post
    Your Registration class is both derived from and contains a Person object? I would think you'd want one or the other but not both. Change Registration class so it is not derived from a Person object and you should be OK.
    Hit the nail on the head!! Many thanks

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