Zi 字媒體
2017-07-25T20:27:27+00:00
C# 隱性指標 [C# Implicitly pointer] VS C++ 傳統指標
GITHUB: https://github.com/jash-git/CS_-Implicitly_pointer
C#當建立一個空物件，然後用指定方式賦予值時，則新物件會是以指標和原物件共想成員變數空間
C#版:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace CS_test
{
public class A
{
public int m_inta,m_intb;
public A()
{
m_inta=0;
m_intb=0;
}
public A(int a,int b)
{
m_inta=a;
m_intb=b;
}
}
class Program
{
static void pause()
{
Console.Write("Press any key to continue ...");
Console.ReadKey(true);
}
static void Main(string[] args)
{
A a = new A(100, 200);
A b;
System.Console.Write(a.m_inta + "\t" + a.m_intb + "\n");
//未初始化b所以不能使用 System.Console.Write(b.m_inta + "\t" + b.m_intb + "\n");
System.Console.Write("---------------\n");
b = a;
System.Console.Write(a.m_inta + "\t" + a.m_intb + "\n");
System.Console.Write(b.m_inta + "\t" + b.m_intb + "\n");
System.Console.Write("---------------\n");
b.m_inta = 200;
b.m_intb = 100;
System.Console.Write(a.m_inta + "\t" + a.m_intb + "\n");
System.Console.Write(b.m_inta + "\t" + b.m_intb + "\n");
System.Console.Write("---------------\n");
pause();
}
}
}
C++版:
#include
using namespace std;
class A
{
public:
int m_inta,m_intb;
A()
{
m_inta=0;
m_intb=0;
};
A(int a,int b)
{
m_inta=a;
m_intb=b;
};
};
int main()
{
A a(100,200),b;
cout << a.m_inta<m_inta<m_intb<< endl;//未初始化，內容不可控
cout << "----------------------" << endl;
pa=&a;
cout << a.m_inta<m_inta<m_intb<< endl;
cout << "----------------------" << endl;
pa->m_inta=200;
pa->m_intb=100;
cout << a.m_inta<m_inta<m_intb<< endl;
cout << "----------------------" << endl;
return 0;
}
寫了
5860316篇文章，獲得
23313次喜歡