c++ - C++简单类

我开始学习C ++，类，对象，结构等，但是与此同时我遇到了一些问题。

#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;
}

但是当我尝试编译这些错误时，我得到了这些错误：

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 ===|

为什么会给我这么多错误？

我不知道为什么，因为很明显，例如

 string GetName()
 {
     return info.name;
 }

从结构info.name返回一个字符串

我正在使用CodeBlocks。

最佳答案

您误解了struct关键字的语法，此外，必须在成员函数访问它之前声明实际的成员变量。因此，将您的类声明更改为

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;}
};