C# Sharp Exercises: Multiplication of two square Matrices
C# Sharp Array: Exercise-21 with Solution
Write a program in C# Sharp for multiplication of two square Matrices.
Sample Solution:-
C# Sharp Code:
using System;
public class Exercise21
{
public static void Main()
{
int i,j,k,r1,c1,r2,c2,sum=0;
int[,] arr1 = new int[50,50];
int[,] brr1 = new int[50,50];
int[,] crr1 = new int[50,50];
Console.Write("\n\nMultiplication of two Matrices\n");
Console.Write("----------------------------------\n");
Console.Write("\nInput the number of rows and columns of the first matrix :\n");
Console.Write("Rows : ");
r1 = Convert.ToInt32(Console.ReadLine());
Console.Write("Columns : ");
c1 = Convert.ToInt32(Console.ReadLine());
Console.Write("\nInput the number of rows of the second matrix :\n");
Console.Write("Rows : ");
r2 = Convert.ToInt32(Console.ReadLine());
Console.Write("Columns : ");
c2 = Convert.ToInt32(Console.ReadLine());
if(c1!=r2){
Console.Write("Mutiplication of Matrix is not possible.");
Console.Write("\nColumn of first matrix and row of second matrix must be same.");
}
else
{
Console.Write("Input elements in the first matrix :\n");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
{
Console.Write("element - [{0}],[{1}] : ",i,j);
arr1[i,j] = Convert.ToInt32(Console.ReadLine());
}
}
Console.Write("Input elements in the second matrix :\n");
for(i=0;i<r2;i++)
{
for(j=0;j<c2;j++)
{
Console.Write("element - [{0}],[{1}] : ",i,j);
brr1[i,j] = Convert.ToInt32(Console.ReadLine());
}
}
Console.Write("\nThe First matrix is :\n");
for(i=0;i<r1;i++)
{
Console.Write("\n");
for(j=0;j<c1;j++)
Console.Write("{0}\t",arr1[i,j]);
}
Console.Write("\nThe Second matrix is :\n");
for(i=0;i<r2;i++)
{
Console.Write("\n");
for(j=0;j<c2;j++)
Console.Write("{0}\t",brr1[i,j]);
}
//multiplication of matrix
for(i=0;i<r1;i++)
for(j=0;j<c2;j++)
crr1[i,j]=0;
for(i=0;i<r1;i++) //row of first matrix
{
for(j=0;j<c2;j++) //column of second matrix
{
sum=0;
for(k=0;k<c1;k++)
sum=sum+arr1[i,k]*brr1[k,j];
crr1[i,j]=sum;
}
}
Console.Write("\nThe multiplication of two matrix is : \n");
for(i=0;i<r1;i++)
{
Console.Write("\n");
for(j=0;j<c2;j++)
{
Console.Write("{0}\t",crr1[i,j]);
}
}
}
Console.Write("\n\n");
}
}
Sample Output:
Multiplication of two Matrices ---------------------------------- Input the number of rows and columns of the first matrix : Rows : 2 Columns : 2 Input the number of rows of the second matrix : Rows : 2 Columns : 2 Input elements in the first matrix : element - [0],[0] : 1 element - [0],[1] : 2 element - [1],[0] : 3 element - [1],[1] : 4 Input elements in the second matrix : element - [0],[0] : 5 element - [0],[1] : 6 element - [1],[0] : 7 element - [1],[1] : 8 The First matrix is : 1 2 3 4 The Second matrix is : 5 6 7 8 The multiplication of two matrix is : 19 22 43 50
Flowchart:
C# Sharp Code Editor:
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Previous: Write a program in C# Sharp for subtraction of two Matrices.
Next: Write a program in C# Sharp to find transpose of a given matrix.
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