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无法运行的贪吃蛇游戏代码,求大神帮忙修改!

#include <iostream>
#include <windows.h>
#include <stdlib.h>
#include <conio.h>
#include <time.h>                                 //使用当前时间做种子
enum dir {up,down,left,right};                    //枚举类型enum dir //围墙
class Fence
{
public:
    void initFence();
    void OutputF();
public:
    char game[20][20];
} f;                                               //定义对象  //画框框
void Fence::lnitFence()
{
    for (int i=0; i<20; i++)
        for (int j=0; j<20; j++)
        {
            if (i==0||i==19||j==0||j==19)
                game[i][j]='*';
            else
                game[i][j]=' ';
        }
}                                                   //显示框框
void Fence::OutputF()
{
    for (int i=0; i<20; i++)
    {
        for (int j=0; j<20; j++)
            cout<<game[i][j]<<'';
        cout<<endl;
    }
}                                                    //蛇结点
class SnakeNode
{
private:
    int x,y;
    SnakeNode *prior,*next;
public:
    void add_head(int x,int y)
    int get_x();
    int get_y();
    void delete_tail();
}
*head=NULL,*tail=NULL;                                 //插入头结点
void SnakeNode::add_head(int x,int y)
{
    SnakeNode *q=new SnakeNode;
    q->x=x;
    q->y=y;
    q->next=head;
    q->prior=NULL;
    if (head)
        head->prior=q;
    head=q;
    if (!tail)
        tail=head;
    f.game[x][y]='*';                                   //f对象可以在定义Fence类时定义;且Fnce类在SnakeNode类前定义
}
int SnkeNode::get_x()
{
    return x;
}
int SnakeNode::get_y()
{
    return y;
}                                                        //删除尾结点
void SnakeNode::delete_tail()
{
    SnakeNode *p=tail;
    f.game[tail->get_x()][tail->get_y()]=' ';            //把尾结点的坐标表示的'*'置为空格;
    if (tail==head)
        tail=head=NULL;
    else
    {
        tail=tail->prior;
        tail=next=NULL;
    }
    delete p;
}
class move
{
public:
    dir point;                                            //枚举变量point:控制方向
    int food_x;
    int food_y;
public:
    void moving();
    void change_point(char);                               //改变方向;
    void get_food();
};
void move::moving()
{
    int a,b;
    a=head->get_x();                                        //取得头结点横坐标
    b=head->get_y();                                        //取得头结点纵坐标
    switch (point)
    {
    case up:
        --a;
        break;
    case down:
        ++a;
        break;
    case left:
        --b;
        break;
    case right:
        ++b;
        break;
    }
    if (a==19||b==19||a==0||b==0||game[a][b]='*')             //判断是否撞墙
    {
        cout<<"gameover!!!"<<endl;
        exit(0);
    }
    if (a==food_x&&b==food_y)                                 //吃food
    {
        head->add_head(a,b);
        get_food;
    }
    else
    {
        head->add_head(a,b);                                   //插入头结点
        head->delete_tail();                                   //删除尾结点
    }
    void move::change_point(char keydown)
    {
        switch (keydown)
        {
        case 'w':
            point=up;
            break;
        case 's':
            point=down;
            break;
        case 'a':
            point=left;
            break;
        case 'd':
            point=right;
            break;
        }
    }
    void move::get_food()
    {
        srand((unsigned int) time(NULL));                       //做种子(程序运行时间)
        food_x=rand()%18+1;
        food-y=rand()%18+1;
        f.game[food_x][food_y]='*';
    }
}
int main()
{
    cout<<"Using 'w,a,s,d'to control direction!!!\n\n\n";     //画框框和小蛇;
    move m;
    f.lnitFence();
    head->add_head(4,3);
    head->add_head(4,4);
    head->add_head(4,5);
    m.get_food();
    f.OutputF();
    while (ture)
    {
        char keydown =getch();                                  //getch()返回
        m.chan
        ge_point(keydown);
        while (!kbhit())                                        //判断有没有按键落下
        {
            system("cls");                                       //清屏函数;
            m.moving();
            f.OutputF();
            sleep(200);
        }
    }
    return 0;
}

 

 错误显示:



  


这是我在网上看到的,照着原图花了半个多小时敲出来的代码,可问题还是一大堆;网上的东西果然不可信啊   这里面好像大部分都是C语言,求有空的大神帮我修改成C++,找出错误并改正,谢谢啦;新手上路,请多多关照。。。

无法运行的贪吃蛇游戏代码,求大神帮忙修改!