"const char *" 类型的默认实参与 "char *" 类型的形参不匹配 要怎么改呢

Question

Game.h
#pragma once
class person
{
    int  m_id;
    const char* m_name;
    int     m_score;
    int  m_money;
private:
    static int m_count;
    static int m_averagescore;
public:
    person(int id, char* name);
    static int getcount();
    static int getaveragescore();
    void setplayer(int id, char* name);
    void showplayer();
    void chaegemoney(unsigned int money);
    void usemoney(unsigned int money);
    ~person() { delete[]m_name; };
};


玩家.cpp
#include<iostream>
using namespace std;
#include"Gamer.h"
person::person(int id = 0,char * name = "default")
{
    m_id = id;
    m_score = 0;
    m_money = 0;
    m_count++;
    m_name = name;
}

int person::m_count = 0;
int person::m_averagescore = 0;
int person::getcount()
{
    return m_count;
}

int person::getaveragescore()
{
    return m_averagescore;
}

void person::setplayer(int id, char* name)
{
    m_id = id;
    m_name = name;
}

void person::showplayer()
{
    cout << "id:[" << m_id << "]\n" << "name:[" << m_name << "]\n"
        << "score:[" << m_score << "]\n" << "money:[" << m_money << "]\n"
        << "cout:[" << m_count << "]\n" << "averagescore:[" << m_averagescore << "]" << endl;
}

void person::chaegemoney(unsigned int money)
{
    m_money += money;
}

void person::usemoney(unsigned int money)
{
    m_money -= money;
    m_score = money;//积分获取方式，累计消费
    m_averagescore += (m_score / m_count);//所有玩家得分平均值
}

int main()
{
    person _A, _B;
    _A.setplayer(4, "course04");
    _A.chaegemoney(100);
    _A.usemoney(90);
    _A.showplayer();

    _B.setplayer(44, "course044");
    _B.chaegemoney(444);
    _B.usemoney(111);
    _B.showplayer();


    system("pause");
    return 0;
}

不知道怎么改，help

Answer 1

C++建议用string代替C字符数组，用char指针有很多雷，比如你的析构函数，字符串的内存不是你new出来的，你这么delete，会有问题，如果new出内存，strcpy字符串，那为了不产生浅拷贝，你需要写拷贝构造和拷贝赋值函数，或者禁用这两者。如果不用析构delete，那意味着你必须保证所有传入的都是字面量字符串，程序存在期间永远存在，不能通过交互gets得到的字符串传递，否则name可能会来回的变，或者保证此字符串只用一次。

#pragma once
#include <string>
class person
{
    int m_id;
    std::string m_name;
    int m_score;
    int m_money;

  private:
    static int m_count;
    static int m_averagescore;

  public:
    explicit person(int id = 0, const std::string &name = "default");
    static auto getcount() -> int;
    static auto getaveragescore() -> int;
    void setplayer(int id, const std::string &name);
    void showplayer();
    void chaegemoney(unsigned int money);
    void usemoney(unsigned int money);
    ~person() = default;
};

#include <iostream>

using std::cout;
using std::endl;
using std::string;

person::person(int id, const string &name)
{
    m_id = id;
    m_score = 0;
    m_money = 0;
    m_count++;
    m_name = name;
}

int person::m_count = 0;
int person::m_averagescore = 0;
auto person::getcount() -> int
{
    return m_count;
}

auto person::getaveragescore() -> int
{
    return m_averagescore;
}

void person::setplayer(int id, const string &name)
{
    m_id = id;
    m_name = name;
}

void person::showplayer()
{
    cout << "id:[" << m_id << "]\n"
         << "name:[" << m_name << "]\n"
         << "score:[" << m_score << "]\n"
         << "money:[" << m_money << "]\n"
         << "cout:[" << m_count << "]\n"
         << "averagescore:[" << m_averagescore << "]" << endl;
}

void person::chaegemoney(unsigned int money)
{
    m_money += static_cast<int>(money);
}

void person::usemoney(unsigned int money)
{
    m_money -= static_cast<int>(money);
    m_score = static_cast<int>(money);     //积分获取方式，累计消费
    m_averagescore += (m_score / m_count); //所有玩家得分平均值
}

int main()
{
    person A;
    person B;
    person C;
    A.setplayer(4, "course04");
    A.chaegemoney(100);
    A.usemoney(90);
    A.showplayer();

    B.setplayer(44, "course044");
    B.chaegemoney(444);
    B.usemoney(111);
    B.showplayer();
    C = B;
    system("pause");
    return 0;
}