Question

I started learning C++, classes, objects, structures and more, but I’m having some problems with this.

#include <iostream>

using namespace std;

class Owner
{
    public:
        // Getters
        string GetName(){return info.name;}
        int GetAge(){return info.age;}
        short int GetGender(){return info.gender;}

        // Setters
        void SetName(string value){info.name = value;}
        void SetAge(int value){info.age = value;}
        void SetGender(short int value){info.gender = value;}
    private:
        struct info
        {
            string name;
            int age;
            short int gender;
        };
};

class Pet
{
    public:
        // Getters
        string GetName(){return info.name;}
        int GetAge(){return info.age;}
        short int GetGender(){return info.gender;}

        // Setters
        void SetName(string value){info.name = value;}
        void SetAge(int value){info.age = value;}
        void SetGender(short int value){info.gender = value;}
    private:
        struct info
        {
            string name;
            int age;
            short int gender;
        }
};


int main()
{

    // Creating object ...

    cout << "qq" << endl;



    return 0;
}

But I get these errors when I try to compile it:

In member function 'std::string Owner::GetName()':|
main.cpp|9|error: expected primary-expression before '.' token|
In member function 'int Owner::GetAge()':|
main.cpp|10|error: expected primary-expression before '.' token|
In member function 'short int Owner::GetGender()':|
main.cpp|11|error: expected primary-expression before '.' token|
In member function 'void Owner::SetName(std::string)':|
main.cpp|14|error: expected unqualified-id before '.' token|
In member function 'void Owner::SetAge(int)':|
main.cpp|15|error: expected unqualified-id before '.' token|
In member function 'void Owner::SetGender(short int)':|
main.cpp|16|error: expected unqualified-id before '.' token|
main.cpp|45|error: expected unqualified-id before '}' token|
In member function 'std::string Pet::GetName()':|
main.cpp|30|error: expected primary-expression before '.' token|
In member function 'int Pet::GetAge()':|
main.cpp|31|error: expected primary-expression before '.' token|
In member function 'short int Pet::GetGender()':|
main.cpp|32|error: expected primary-expression before '.' token|
In member function 'void Pet::SetName(std::string)':|
main.cpp|35|error: expected unqualified-id before '.' token|
In member function 'void Pet::SetAge(int)':|
main.cpp|36|error: expected unqualified-id before '.' token|
In member function 'void Pet::SetGender(short int)':|
main.cpp|37|error: expected unqualified-id before '.' token|
||=== Build finished: 13 errors, 0 warnings ===|

Why does it give me so many errors?

I don’t know why, because it is obvious that, for example,

 string GetName()
 {
     return info.name;
 }

returns a string, from the structure info.name

I’m using CodeBlocks.

Answer 1

You’re misunderstanding the syntax of the struct keyword, furthermore the actual member variable has to be declared before the member functions accessing it. So change your class declarations to something like

class Owner
{
private:
    struct
    {
        string name;
        int age;
        short int gender;
    } info;

public:
    // Getters
    string GetName(){return info.name;}
    int GetAge(){return info.age;}
    short int GetGender(){return info.gender;}

    // Setters
    void SetName(string value){info.name = value;}
    void SetAge(int value){info.age = value;}
    void SetGender(short int value){info.gender = value;}
};