新手求大神帮忙解决一下,拜谢！！！

Question

用C++写一个*号组成的等腰三角形，打印在控制台上可以通过键盘控制使它上下左右移动。要求用类写，注释随意。

Answer 1

共3个文件

1) MobileTriangle.cpp 类定义文件

#include <iostream>
using namespace std;

#include "MobileTriangle.h"
#include <stdio.h>

MobileTriangle::MobileTriangle(int init_row, int init_leftMargin, int init_topMargin)
{
    row = init_row;
    leftMargin = init_leftMargin;
    topMargin = init_topMargin;
}

void MobileTriangle::Show(int size, int left, int top)
{
    system("CLS");

    int space = size + top;
    for (int i = 0; i < size + top; i++) {
        for (int w = 0; w < left; w++)
        {
            cout << " ";
        }

        for (int j = space; j > 0; j--) {

            cout << " ";
        }
        for (int star = 0; star <= (i - top) * 2; star++) {
            cout << "*";
        }
        space--;
        cout << endl;
    }
}

2) MobileTriangle.h 类头文件

class MobileTriangle
{
public:
    MobileTriangle(int init_row, int init_leftMargin, int init_topMargin);
    void Show(int size,int left, int top);
private:
    int row;
    int leftMargin;
    int topMargin;
};

3) main.c 主程序

#include<iostream>
#include "MobileTriangle.h"
using namespace std;

#include <stdio.h>
#include <conio.h>

#define KB_UP 72
#define KB_DOWN 80
#define KB_LEFT 75
#define KB_RIGHT 77
#define KB_ESCAPE 27

void main() {
    int size;
    int left;
    int top;
    cout << "Enter the size = ";
    cin >> size;
    cout << "Enter the leftMargin = ";
    cin >> left;
    cout << "Enter the topMargin = ";
    cin >> top;

    MobileTriangle mobileTriangle(size, left, top);
    mobileTriangle.Show(size, left, top);

    cout << "请按方向键移动三角形，按q键退出程序" << endl;

    int KB_code = 0;

    while (KB_code != KB_ESCAPE)
    {
        if (_kbhit())
        {
            KB_code = _getch();

            switch (KB_code)
            {
            case KB_LEFT:
                left--;
                if (left >= 0)
                {
                    mobileTriangle.Show(size, left, top);
                } 
                else
                {
                    cout << "cant't move left";
                }

                break;

            case KB_RIGHT:
                left++;
                mobileTriangle.Show(size, left, top);
                break;

            case KB_UP:
                top--;
                if (top >= 0)
                {
                    mobileTriangle.Show(size, left, top);
                }
                else
                {
                    cout << "cant't move top";
                }
                break;

            case KB_DOWN:
                top++;
                mobileTriangle.Show(size, left, top);
                break;
            }
        }
    }
}

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