Умножение матриц - C# (181613)

        static void Multiplication(out int[,] resMatrix, int[,] matrixA, int[,] matrixB, 
            int matrixARows, int matrixACols, int matrixBRows, int matrixBCols)
        {
            resMatrix = new int[matrixARows, matrixBCols];
 
            for (int i = 0; i < matrixARows; i++)
                for (int j = 0; j < matrixBCols; j++)
                    for (int k = 0; k < matrixBRows; k++)
                        resMatrix[i, j] = matrixA[i, k] * matrixB[k, j];
 
        }

        static void CreateRandomMatrix(ref int[,] matrix, int rows, int columns, int value)
        {
            Random r = new Random();
 
            for (int i = 0; i < rows; i++)
                for (int j = 0; j < columns; j++)
                    matrix[i, j] = r.Next(value);
        }

CreateRandomMatrix(ref matrixA, matrixARows, matrixACols, 10);
CreateRandomMatrix(ref matrixB, matrixBRows, matrixBCols, 10);
 
int[,] mMatrix;
 
Console.WriteLine("\nMatrix C: MatrixA * MatrixB = ");
Multiplication(out mMatrix, matrixA, matrixB,
    matrixARows, matrixACols, matrixBRows, matrixBCols);

resMatrix[i, j] += matrixA[i, k] * matrixB[k, j];