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Question

please send full code on rectangular array for multiplication using c#.net

Vulpes · Answer

Although we have a good Java article on matrix multiplication I couldn't find one using C# so here's some code for that: using System; class MatrixMultiplication { static void Main() { int rows1 cols1 rows2 cols2; // enter dimensions of matrices while(true) { Console.Write(Enter number of rows in first matrix: ); int.TryParse(Console.ReadLine() out rows1); if(rows1 > 0) break; Console.WriteLine(Invalid number try again); } while(true) { Console.Write(Enter number of columns in first matrix: ); int.TryParse(Console.ReadLine() out cols1); if(cols1 > 0) break; Console.WriteLine(Invalid number try again); } while(true) { Console.Write(
Enter number of rows in second matrix: ); int.TryParse(Console.ReadLine() out rows2); if(rows2 > 0) break; Console.WriteLine(Invalid number try again); } // check whether matrix multiplication is possible if (cols1 != rows2) { Console.WriteLine(Matrix multiplication not possible as number of columns in first matrix not equal to number of rows in second matrix); return; } while(true) { Console.Write(Enter number of columns in second matrix: ); int.TryParse(Console.ReadLine() out cols2); if(cols2 > 0) break; Console.WriteLine(Invalid number try again); } // create 2D arrays to contain matrices - integral values assumed int[] matrix1 = new int[rows1 cols1]; int[] matrix2 = new int[rows2 cols2]; int[] product = new int[rows1 cols2]; // enter integer values for matrix1 and matrix2 Console.WriteLine(
Enter values for each row of first matrix separated by spaces:); int row = 0; while(row { Console.Write( Row {0} :  row + 1); string input = Console.ReadLine(); string[] items = input.Split(new string[]{ } StringSplitOptions.RemoveEmptyEntries); if (items.Length != cols1) { Console.WriteLine(Number of values does not match number of columns try again); continue; } bool isOK = true; for(int col = 0; col { bool isValid = int.TryParse(items[col] out matrix1[row col]); if(!isValid) { Console.WriteLine(Row contains an invalid integer try again); isOK = false; break; } } if (isOK) row++; } Console.WriteLine(
Enter values for each row of second matrix separated by spaces:); row = 0; while(row { Console.Write( Row {0} :  row + 1); string input = Console.ReadLine(); string[] items = input.Split(new string[]{ } StringSplitOptions.RemoveEmptyEntries); if (items.Length != cols2) { Console.WriteLine(Number of values does not match number of columns try again); continue; } bool isOK = true; for(int col = 0; col { bool isValid = int.TryParse(items[col] out matrix2[row col]); if(!isValid) { Console.WriteLine(Row contains an invalid integer try again); isOK = false; break; } } if (isOK) row++; } // multiply the two matrices for (int i = 0; i { for (int j = 0; j { int sum = 0; for (int k = 0; k { sum += matrix1[i k] * matrix2[k j]; } product[i j] = sum; } } Console.WriteLine(
The product matrix of size {0} x {1} is as follows: rows1 cols2); for(int i = 0; i { for(int j = 0; j { Console.Write({0 3}  product[i j]); } Console.WriteLine(); } } }

Sivaraman Dhamodaran · Answer

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