operators overloading

As there's a lot more to be said about operator overloading than can really be covered in a forum post, I'd check these articles for further details:

http://www.codeproject.com/Articles/28974/An-Introduction-to-Operator-Overloading-in-C

http://www.codeproject.com/Articles/178309/Operator-Overloading-in-C-NET

http://www.codeproject.com/Articles/452727/A-Beginners-Tutorial-on-Operator-Overloading-in-Cs

Joe Wilson12y ago

Somehow both of you,
I want to know some basic things about operator overloading,First.
Then, Compare my knowledge with your answers to my question.
Thanks.

Vulpes12y ago

@Joe,

Are you talking here about Abhay's answer or mine?

Mine certainly compiles and is a straightforward example of operating overloading in C#.

The '+' operator is overloaded in order to add two Matrix objects together and return a new Matrix whose elements are the sum of their corresponding elements.

As in the case of all operator overloads a static method is used in conjunction with the 'operator' keyword and the operator to be overloaded.

This method first makes sure that the sizes of the two Matrix objects to be added are the same as they can't be added otherwise and an exception is then thrown.

Joe Wilson12y ago

Thank You for your answer but, your answer is somehow hard to compiling and a bit complicated.so,If it is possible either rewrite your answer or explain your answer,Please.

Sincerely
Joe Wilson

Joe Wilson12y ago

Thank You for Your answer.
Joe Wilson

Vulpes12y ago

To use operator overloading, you'll need to create a custom Matrix class.

Try this:

using System;

class Matrix

{

int[,] elements;

public int this[int i, int j]

{

get { return elements[i, j]; }

set { elements[i,j] = value; }

}

public Matrix(int rowSize, int colSize)

{

elements = new int[rowSize, colSize];

}

public static Matrix operator+(Matrix a, Matrix b)

{

if ((a.elements.GetLength(0) != b.elements.GetLength(0)) ||

(a.elements.GetLength(1) != b.elements.GetLength(1)))

{

throw new ArgumentException("To add matrices, they must be of the same size");

}

Matrix m = new Matrix(a.elements.GetLength(0), a.elements.GetLength(1));

for(int i = 0; i < a.elements.GetLength(0); i++)

{

for(int j = 0; j < a.elements.GetLength(1); j++)

{

m[i,j] = a[i,j] + b[i,j];

}

return m;

}

class Program

{

static void Main()

{

Matrix a = new Matrix(2, 2);

a[0,0] = 4;

a[0,1] = 1;

a[1,0] = 20;

a[1,1] = 6;

Matrix b = new Matrix(2, 2);

b[0,0] = 5;

b[0,1] = 3;

b[1,0] = 12;

b[1,1] = 6;

Matrix c = a + b;

for(int i = 0; i < 2; i++)

{

for(int j = 0; j < 2; j++)

{

Console.Write("{0,-2} ", c[i,j]);

}

Console.WriteLine();

}

Console.ReadKey();

}

}

The output is:

9 4

32 12

Abhay Shanker12y ago

Console.Write("Please enter No. of Rows :: ");            int row = int.Parse(Console.ReadLine());
 
            Console.Write("Please enter No. of Columns :: ");
            int column = int.Parse(Console.ReadLine());
             
            int[,] matrix1 = new int[row, column];
            int[,] matrix2 = new int[row, column];
            int[,] matrix3 = new int[row, column];
 
            Console.WriteLine("Please provide matrix data :: for " + row + " X " + column);
 
            for(int k=0; k< row; k++)
            {
                 for(int l=0; l
                 {
                     Console.Write("Please Input for " + k + "th row and " + l + "th column of first Matrix :: ");
                      matrix1[k,l] = int.Parse(Console.ReadLine());
                 }
            }
 
            for (int k = 0; k < row; k++)
            {
                for (int l = 0; l < column; l++)
                {
                    Console.Write("Please Input for " + k + "th row and " + l + "th column of second Matrix :: ");
                    matrix2[k, l] = int.Parse(Console.ReadLine());
                }
            }
 
            for (int k = 0; k < row; k++)
            {
                for (int l = 0; l < column; l++)
                {
                    matrix3[k, l] = matrix1[k, l] + matrix2[k, l];
                }
            }
 
 
            Console.WriteLine("Sum of Matrix is following: ");
 
            for (int k = 0; k < row; k++)
            {
                for (int l = 0; l < column; l++)
                {
                    Console.Write(matrix3[k, l] + " ");
                }
 
                Console.WriteLine();
            }
 
            Console.ReadKey();