程序代码：

#include<iostream>
using namespace std;

class mypoint {
    int x, y;
public:
    mypoint(int X, int Y) :x(X), y(Y) {}
    void set(int X, int Y) { x = X, y = Y; }
    int getx()const { return x; }
    int gety()const { return y; }
    void print()const
    {
        cout << "(" << x << "," << "y" << ")";
    }
    void left() { x--; }
    void right() { x++; }
    void down() { y++; }
    void up() { y--; }
    bool equal(mypoint p)const
    {
        if (x == p.x&&y == p.y)
            return true;
        else return false;
    }
};
enum { LEFT, RIGHT, DOWN, UP };
class myobject {
private:
    mypoint position;
    int size;
    int weight;
public:
    myobject(int x, int y, int s, int w) :position(x, y) {
        size = s; weight = w;
    }
    myobject(mypoint p, int s, int w) :position(p) {
        size = s; weight = w;
    }
    ~myobject() {}

    void move(int d)
    {
        switch (d)
        {
        case LEFT:position.left(); break;
        case RIGHT: position.right(); break;
        case DOWN: position.down(); break;
        case UP:position.up(); break;
        }
    }
    bool reach(mypoint p)
    {
        if (position.equal(p))
            return true;
    else return false;
    }
    void show()const
    {
        position.print(); cout << ""<<size << "" << weight << "" << endl;
    }
};
int cmdtod(char c)
{
    c = toupper(c);
    switch (c)
    {
    case'A':return LEFT;
    case'S':return DOWN;
    case'D':return RIGHT;
    case'W':return UP;
    }
    return -1;
}

int main()
{
    mypoint start(0,0),target(10,5);
    myobject ob(start, 1, 1);
    cout << "初始位置:";
    start.print();
    cout << "目标位置:";
    target.print();
    while (!ob.reach(target))
    {
        char cmd;
        cin >> cmd;
        int d = cmdtod(cmd);
        if (d ==-1)
            continue;
        ob.move(d);
        ob.show();
    }
    cout << 到达目标";
    ob.show();
    system("pause");
    return 0;
}