巨匠學員_郭翔宇_詢問C++問題.cpp

#include <stdlib.h>
#include <string.h>
#include <iostream>

using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

// 定義視窗類別CWin
class CWin {

private:
    char id, *title;

public:
    CWin(char i = 'D', char *text = (char *)"Default window") :id(i) {
        title = new char[50];//配置可容納50個字元的記憶空間
        strcpy(title, text);//將text所指向的字串拷貝給title
    }

    void set_data(char i, char *text) {
        id = i;
        strcpy(title, text);//將text所指向的字串拷貝給title
    }

    void show(void) {
        cout << "Window " << id << ": " << title << endl;
    }

    void show_address(void) {
        cout << "Window " << id << ": " << &id << endl;
    }

    //解構元
    ~CWin() {
        delete[] title;
        title = NULL;
    }
};

int main(int argc, char** argv) {

    system("color f0");

    CWin win1('A', (char *)"Main window");
    CWin win2;

    cout << "win1.show() = ";
    win1.show();

    cout << "win2.show() = ";
    win2.show();

    cout << "win1.show_address() = ";
    win1.show_address();

    cout << "win2.show_address() = ";
    win2.show_address();

    win1 = win2; // 設定win1=win2
    cout << endl << "設定 win1 = win2 之後..." << endl;

    cout << "win1.show() = ";
    win1.show();

    cout << "win2.show() = ";
    win2.show();

    cout << "win1.show_address() = ";
    win1.show_address();

    cout << "win2.show_address() = ";
    win2.show_address();

    win1.set_data('B', (char *)"Hello window");
    cout << endl << "更改 win1 的資料成員之後..." << endl;

    cout << "win1.show() = ";
    win1.show();

    cout << "win2.show() = ";
    win2.show();

    cout << endl;
    system("pause");
    return 0;
}