Zi 字媒體
2017-07-25T20:27:27+00:00
C++ 和 C# 運算元 重載( Overloading Operator ) 對照 範例
程式專案(GITHUB):https://github.com/jash-git/CPP_CS_-Overloading-Operator-
//C++
#include
#include
/*
C++ 運算子 重載(多載) ex==
*/
using namespace std;
class point2D
{
public:
int m_x;
int m_y;
point2D(int x,int y )
{
m_x=x;
m_y=y;
}
point2D()
{
m_x=0;
m_y=0;
}
//error: no match for ‘operator==’ in ‘A == B’
bool operator==(point2D T)
{
bool Ans=false;
if((m_x==T.m_x) && (m_y==T.m_y))
{
Ans=true;
}
return Ans;
}
};
void Pause()
{
printf(“Press Enter key to continue…”);
fgetc(stdin);
}
int main()
{
point2D A,B,C(1,2);
//cout << “Hello world!” << endl;
cout <
cout <
cout <
if(A==B)
{
cout <
}
else
{
cout <
}
if(A==C)
{
cout <
}
else
{
cout <
}
Pause();
return 0;
}
//===========================================================================================//
//C#:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CS_Overloading_Operator
{
public class point2D
{
public int m_x;
public int m_y;
public point2D(int x,int y)
{
m_x = x;
m_y = y;
}
public point2D()
{
m_x = 0;
m_y = 0;
}
public static bool operator ==(point2D T, point2D U)
{
bool Ans = false;
if((U.m_x==T.m_x) && (U.m_y == T.m_y))
{
Ans = true;
}
return Ans;
}
public static bool operator !=(point2D T, point2D U)
{
bool Ans = true;
if ((U.m_x == T.m_x) && (U.m_y == T.m_y))
{
Ans = false;
}
return Ans;
}
}
class Program
{
static void pause()
{
Console.Write(“Press any key to continue . . . “);
Console.ReadKey(true);
}
static void Main(string[] args)
{
point2D A = new point2D();
point2D B = new point2D();
point2D C = new point2D(10,20);
Console.WriteLine(“A(” + A.m_x + “,” + A.m_y + “)”);
Console.WriteLine(“B(” + B.m_x + “,” + B.m_y + “)”);
Console.WriteLine(“C(” + C.m_x + “,” + C.m_y + “)”);
if(A==B)
{
Console.WriteLine(“A=B”);
}
else
{
Console.WriteLine(“A!=B”);
}
if (A == C)
{
Console.WriteLine(“A=C”);
}
else
{
Console.WriteLine(“A!=C”);
}
pause();
}
}
}
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