class Country { private: char name[40],capital[40]; int population; public: Country( const char* cou=NULL,const char* cap="NONE",int pop=0 ); char* GetName const( ); char* GetCapital const( ); int GetPopulation const( ); void Set( const char* cou="Russia",const char* cap="Moscow",int pop=143000000 ); void Show(); }; Country::Country( const char* cou,const char* cap,int pop ) { strcpy(name,cou); strcpy(capital,cap); population=pop; } char* Country::GetName const( ) { return name; } char* Country::GetCapital const( ) { return capital; } int Country::GetPopulation const( ) { return population; } void Country::Set( const char* cou,const char* cap,int pop ) { strcpy(name,cou); strcpy(capital,cap); population=pop; } void Country::Show( ) { cout<<name<<"-"<<capital<<"-"<<population<<endl; } 这段代码有什么问题

这段代码有两个问题：

1. 在类的成员函数中，函数的返回类型和const关键字位置写反了，应该将const关键字放在函数返回类型的左侧。

2. 在类的成员函数中，char*类型的成员函数GetName和GetCapital返回的是类的私有成员变量指针，这样会导致类的私有成员变量被意外修改，应该将返回类型改为const char*。

修正后的代码如下所示：

class Country {
    private:
        char name[40], capital[40];
        int population;
    public:
        Country(const char* cou = NULL, const char* cap = "NONE", int pop = 0);
        const char* GetName() const;
        const char* GetCapital() const;
        int GetPopulation() const;
        void Set(const char* cou = "Russia", const char* cap = "Moscow", int pop = 143000000);
        void Show();
};

Country::Country(const char* cou, const char* cap, int pop) {
    strcpy(name, cou);
    strcpy(capital, cap);
    population = pop;
}

const char* Country::GetName() const {
    return name;
}

const char* Country::GetCapital() const {
    return capital;
}

int Country::GetPopulation() const {
    return population;
}

void Country::Set(const char* cou, const char* cap, int pop) {
    strcpy(name, cou);
    strcpy(capital, cap);
    population = pop;
}

void Country::Show() {
    cout << name << "-" << capital << "-" << population << endl;
}