Matrix Multiplication

object prog6 {
def main(args: Array[String]): Unit = {

println("Enter the number of rows and columns in Matrix A")
val rA = scala.io.StdIn.readInt()
val cA = scala.io.StdIn.readInt()
println("Enter the number of rows and columns in Matrix B")
val rB = scala.io.StdIn.readInt()
val cB = scala.io.StdIn.readInt()

if (cA != rB) {
  println("Error: the number of columns in matrix A must match the number of rows in matrix B.")
} else {

  val arrayA = Array.ofDim[Int](rA, cA)
  val arrayB = Array.ofDim[Int](rB, cB)

  println("Enter the elements of matrix A, row by row: ")
  for (i <- 0 until rA) {
    for (j <- 0 until cA) {
      arrayA(i)(j) = scala.io.StdIn.readInt()
    }
  }

  println("Matrix A : ")
  for (i <- 0 until rA) {
    for (j <- 0 until cA) {
      print(arrayA(i)(j) + "\t")
    }
    println("\n")
  }

  println("Enter the elements of matrix B, row by row: ")
  for (i <- 0 until rB) {
    for (j <- 0 until cB) {
      arrayB(i)(j) = scala.io.StdIn.readInt()
    }
  }

  println("Matrix B : ")
  for (i <- 0 until rB) {
    for (j <- 0 until cB) {
      print(arrayB(i)(j) + "\t")
    }
    println("\n")
  }

  val result = Array.ofDim[Int](rA, cB)
  for (i <- 0 until rA) {
    for (j <- 0 until cB) {
      for (k <- 0 until cA) {
        result(i)(j) = result(i)(j) + arrayA(i)(k) * arrayB(k)(j)
      }
    }
  }

  println("Resulting Matrix : ")
  for (i <- 0 until rA) {
    for (j <- 0 until cB) {
      print(result(i)(j) + "\t")
    }
    println("\n")
  }

}

}
}