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c++中实现一个简单类的问题

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c++中实现一个简单类的问题

发表于：2007-03-21 08:19:33 楼主

请大帮个忙：
设计一个玩家类，属性包括：id、玩家姓名、玩家等级和玩家经验。要求创建5个玩家对象，其中玩家等级随机给出（范围在0~100），同时按给出的玩家id找出对应的玩家信息，同时要按玩家等级进行从高到低排序。
下面是我设计出来的代码：可调试老是出错：（我是在visual studio 2005 下的vc++玩境下进行的调试）
请高手帮忙解决一下，或者你设计一个出来！

#include "stdafx.h "
#include <iostream>
#include <cstdlib>
#include <string>
#include <conio.h>

using namespace std;

class player{
private:
char playerid[20];
char playername[10];
int playerlevel;
int experience;
public:
player（);
~player（);
void getplayerinfo（);
void putplayerinfo（player *ptr);
int search（player *ptr, char *id);
void sort（player *ptr);
};

void player::getplayerinfo（){
int cont=0;
cout < < "\n输入玩家的id： ";
cin> > playerid;
cout < < "\n输入玩家的姓名： ";
cin> > playername;
playerlevel=rand（);
experience=cont++;
}

void player::putplayerinfo（player *ptr){
int cont=0;
while（ cont <5 )
{
cout < < " 玩家id： " < <ptr[cont].playerid < <endl;
cout < < " 玩家姓名： " < <ptr[cont].playername < <endl;
cout < < " 玩家等级为： " < <ptr[cont].playerlevel < <endl;
cout < < "玩家经验值为： " < <ptr[cont].experience < <endl;
cont++;
}
}

int search（player *ptr,char *id){
for （ int i=0;i <5;i++ )
{
if （ ptr[i].playerid==*id )
cout < < "你要查找的游戏玩家的id是： " < <ptr[i].playerid;
ptr++;
}
return 0;
}

void sort（player *ptr){
for （ int i=0;i <5;i++ )
{
int max=ptr[i].playerlevel;
for （ int j=i+1;j <5;j++ )
if （ max <ptr[j].playerlevel ){
ptr[i].playerlevel=ptr[j].playerlevel;
ptr[j].playerlevel=max;
}
}
}

int main（)
{
player p[5];
int i=0;
while （ i <5 )
{
p[i].getplayerinfo（);
i=i+1;
}
cout < < "请输入要找的玩家姓名： ";
char *id;
cin> > id;
player test;
test.search（ p,id );
test.putplayerinfo（ p[0] );
test.sort（ p );
test.putplayerinfo（ p );

system（ "pause ");
return 0;
}

------ 已启动生成: 项目: player, 配置: debug win32 ------
正在编译...
player.cpp
f:\my documents\visual studio 2005\projects\player\player\player.cpp（53) : error c2248: 'player::playerid ' : cannot access private member declared in class 'player '

f:\my documents\visual studio 2005\projects\player\player\player.cpp（14) : see declaration of 'player::playerid '

f:\my documents\visual studio 2005\projects\player\player\player.cpp（12) : see declaration of 'player '

f:\my documents\visual studio 2005\projects\player\player\player.cpp（53) : error c2446: '== ' : no conversion from 'int ' to 'char * ' conversion from integral type to pointer type requires reinterpret_cast, c-style cast or function-style cast

f:\my documents\visual studio 2005\projects\player\player\player.cpp（53) : error c2040: '== ' : 'char [20] ' differs in levels of indirection from 'int '

f:\my documents\visual studio 2005\projects\player\player\player.cpp（54) : error c2248: 'player::playerid ' : cannot access private member declared in class 'player '

f:\my documents\visual studio 2005\projects\player\player\player.cpp（14) : see declaration of 'player::playerid '

f:\my documents\visual studio 2005\projects\player\player\player.cpp（12) : see declaration of 'player '

生成日志保存在“file://f:\my documents\visual studio 2005\projects\player\player\debug\buildlog.htm”
player - 10 个错误，个警告
========== 生成: 0 已成功, 1 已失败, 0 最新, 0 已跳过==========

发表于：2007-03-21 10:59:451楼得分:0

int search
====>
int player::search
..

发表于：2007-03-30 23:23:232楼得分:0

// 简单的能够编译并可以运行的版本，不过程序经不住测试，漏洞百出。
// 楼主大概是刚学c/c++，慢慢学吧！

#include "stdafx.h "

#include "stdafx.h "
#include <iostream>
#include <cstdlib>
#include <string>
#include <conio.h>

using namespace std;

class player
{
private:
char playerid[20];
char playername[10];
int playerlevel;
int experience;
public:
player（);
~player（);
void getplayerinfo（);
void putplayerinfo（player *ptr);
int search（player *ptr, char *id);
void sort（player *ptr);
};
player::player（)
{

}

player::~player（)
{

}
void player::getplayerinfo（)
{
int cont=0;
cout < < "\n输入玩家的id： ";
cin> > playerid;
cout < < "\n输入玩家的姓名： ";
cin> > playername;
playerlevel=rand（);
experience=cont++;
}

void player::putplayerinfo（player *ptr)
{
int cont=0;
while（ cont <5 )
{
cout < < " 玩家id： " < <ptr[cont].playerid < <endl;
cout < < " 玩家姓名： " < <ptr[cont].playername < <endl;
cout < < " 玩家等级为： " < <ptr[cont].playerlevel < <endl;
cout < < "玩家经验值为： " < <ptr[cont].experience < <endl;
cont++;
}
}

int player::search（player *ptr,char *id)
{
for （ int i=0;i <5;i++ )
{
if （ strcmp（ ptr[i].playerid, id ) == 0 )
{
cout < < "你要查找的游戏玩家的id是： " < <ptr[i].playerid;
return 0;
}
ptr++;
}
return 0;
}

void player::sort（player *ptr)
{
for （ int i=0;i <5;i++ )
{
int max=ptr[i].playerlevel;
for （ int j=i+1;j <5;j++ )
if （ max <ptr[j].playerlevel )
{
ptr[i].playerlevel=ptr[j].playerlevel;
ptr[j].playerlevel=max;
}
}
}

int main（)
{
player p[5];
int i=0;
while （ i <5 )
{
p[i].getplayerinfo（);
i=i+1;
}

cout < < "请输入要找的玩家姓名： ";
char id[100] = {0};
cin> > id;

player test;
test.search（ p, id );
test.putplayerinfo（ &p[0] );
test.sort（ p );
test.putplayerinfo（ p );

system（ "pause ");
return 0;
}

发表于：2007-04-01 00:27:253楼得分:0

这样的问题最好还是自己试着解决,对打基础很有帮助

发表于：2007-04-02 12:29:034楼得分:0

#include "stdafx.h "
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;

class player
{
private:
string _id;
string _name;
int _lvl;
int _exp;
public:
player（)
:_lvl（0), _exp（0)
{
}
player（const string& id, const string& name, int lvl = 0, int exp = 0);

void info（) const;
void modify（);

string id（) const
{
return _id;
}
int level（) const
{
return _lvl;
}
};

player::player（const string& id, const string& name, int lvl, int exp)
{
this-> _id = id;
this-> _name = name;
this-> _lvl = lvl;
this-> _exp = exp;
}

void player::info（) const
{
cout < < " 玩家id： " < < this-> _id < <endl;
cout < < " 玩家姓名： " < < this-> _name < <endl;
cout < < " 玩家等级为： " < < this-> _lvl < <endl;
cout < < "玩家经验值为： " < < this-> _exp < <endl;
cout < < endl;
}

void player::modify（)
{
}

bool higherlevelplayer（const player& lhs, const player& rhs)
{
return lhs.level（) > rhs.level（) ;
}

class correctplayer
{
private:
const string* _name;
public:
correctplayer（const string& name)
{
_name = &name;
}
bool operator（) （const player& player)
{
return player.id（) == *_name;
}
};

class playervector
{
private:
vector <player> _vector;

public:
void pushback（const player& player);
void sort（);
bool search（const string& id, player& result) const;
void show（) const ;
};

void playervector::sort（)
{
sort（_vector.begin（), _vector.end（), higherlevelplayer);
}

bool playervector::search（const string& id, player& result) const
{
vector <player> ::const_iterator pos = find_if（_vector.begin（), _vector.end（), correctplayer（id));
if （pos != _vector.end（))
{
result = *pos;
return true;
}
return false;
}

void playervector::pushback（const player& player)
{
_vector.push_back（player);
}

void playervector::show（) const
{
for （vector <player> ::const_iterator pos = _vector.begin（); pos != _vector.end（); ++pos)
{
pos-> info（);
}
}

void test（)
{
playervector playervector;
playervector.pushback（player（ "e ", "e ", 5, 5));
playervector.pushback（player（ "d ", "d ", 4, 4));
playervector.pushback（player（ "a ", "a ", 1, 1));
playervector.pushback（player（ "b ", "b ", 4, 2));
playervector.pushback（player（ "c ", "c ", 3, 3));

cout < < "原始玩家资料: " < < endl;
playervector.show（);

cout < < "排序后的玩家资料: " < < endl;
playervector.sort（);
playervector.show（);

string searchid;
cout < < "需要搜索的玩家id: ";
getline（cin, searchid);
player result;
if （ playervector.search（searchid, result) )
{
cout < < "搜索结果: " < < endl;
result.info（);
}
else
{
cout < < "没有id匹配的玩家资料 " < < endl;
}
}

void main（)
{
test（);
}

大概就是这样子吧，关于输入玩家资料部分不写了，好久不用c++，难免有不好的地方。

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