# C# program to multiply two matrices

Here, we are going to learn how to multiply two matrices in C#?
Submitted by Nidhi, on November 02, 2020

Here, we will read a matrix from the user and then calculate the multiplication of matrices.

Program:

The source code to multiply two matrices is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

```//C# program to multiply two matrices.

using System;

class MatrixDemo
{
public static void Main(string[] args)
{
int i = 0;
int j = 0;

int row     = 2;
int col     = 2;

int[,] Matrix1 = new int[row, col];
int[,] Matrix2 = new int[row, col];
int[,] Matrix3 = new int[row, col];

Console.Write("Enter the elements of matrix1: ");
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
}
}

Console.Write("Enter the elements of matrix2: ");
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
}
}

for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
Matrix3[i, j] = 0;
for (int k = 0; k < 2; k++)
{
Matrix3[i, j] += Matrix1[i, k] * Matrix2[k, j];
}
}
}

Console.WriteLine("\nMatrix1: ");
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
Console.Write(Matrix1[i, j] + "\t");
}
Console.WriteLine();
}

Console.WriteLine("\nMatrix2: ");
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
Console.Write(Matrix2[i, j] + "\t");
}
Console.WriteLine();
}

Console.WriteLine("\nMatrix3: ");
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
Console.Write(Matrix3[i, j] + "\t");
}
Console.WriteLine();
}

}
}
```

Output:

```Enter the elements of matrix1: 1
2
3
4
Enter the elements of matrix2: 5
6
7
8

Matrix1:
1       2
3       4

Matrix2:
5       6
7       8

Matrix3:
19      22
43      50
Press any key to continue . . .
```

Explanation:

In the above program, we created a class MatrixDemo that contains a Main() method. The Main() method is the entry point for the program, Here we created three 2-D arrays to represent a matrix.

```Console.Write("Enter the elements of matrix1: ");
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
}
}

Console.Write("Enter the elements of matrix2: ");
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
}
}
```

In the above code, we read two matrices from the user.

```for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
Matrix3[i, j] = 0;
for (int k = 0; k < 2; k++)
{
Matrix3[i, j] += Matrix1[i, k] * Matrix2[k, j];
}
}
}
```

Here, we calculated the multiplication of Matrix1 and Matrix2 and assigned the result to the Matrix3. After that, we printed all matrices on the console screen.

What's New (MCQs)

Top Interview Coding Problems/Challenges!

IncludeHelp's Blogs

Languages: » C » C++ » C++ STL » Java » Data Structure » C#.Net » Android » Kotlin » SQL
Web Technologies: » PHP » Python » JavaScript » CSS » Ajax » Node.js » Web programming/HTML
Solved programs: » C » C++ » DS » Java » C#
Aptitude que. & ans.: » C » C++ » Java » DBMS
Interview que. & ans.: » C » Embedded C » Java » SEO » HR
CS Subjects: » CS Basics » O.S. » Networks » DBMS » Embedded Systems » Cloud Computing
» Machine learning » CS Organizations » Linux » DOS
More: » Articles » Puzzles » News/Updates