Go Program To Multiplication Two Matrices (Golang)

Published by Codingster January 24, 2019

Go Program To Multiplication Two Matrices (Golang) - In this post, we will learn how to create a program calculate the two matrix multiplication in the Go programming language.

Matrix is a collection of numbers arranged in rows (vertical) and columns (horizontal) can also be called two-dimensional arrays. matrix multiplication has the condition that the number of columns of the first matrix is equal to the number of rows of the second matrix.

Go Program To Multiplication Two Matrices (Golang)

Source Code:

package main

import "fmt"

func main() {

  var matrixA [10][10]int
  var matrixB [10][10]int
  var result [10][10]int
  var i, j, k, m, n, p, q, total int

  total = 0

  fmt.Print("Enter the number of rows the first matrix: ")
  fmt.Scanln(&m)
  fmt.Print("Enter the number of columns the first matrix: ")
  fmt.Scanln(&n)

  fmt.Print("Enter the number of rows the second matrix: ")
  fmt.Scanln(&p)
  fmt.Print("Enter the number of columns the second matrix : ")
  fmt.Scanln(&q)

  if n != p {
    fmt.Println("Error: The matrix cannot be multiplied")
  } else {

    fmt.Println("Enter the first matrix elements: ")
    for i = 0; i < m; i++ {
      for j = 0; j < n; j++ {
        fmt.Scan(&matrixA[i][j])
      }
    }

    fmt.Println("Enter the second matrix elements: ")
    for i = 0; i < p; i++ {
      for j = 0; j < q; j++ {
        fmt.Scan(&matrixB[i][j])
      }
    }

    for i = 0; i < m; i++ {
      for j = 0; j < q; j++ {
        for k = 0; k < p; k++ {
          total = total + matrixA[i][k]*matrixB[k][j]
        }
        result[i][j] = total
        total = 0
      }
    }

    fmt.Println("Results of matrix multiplication: ")
    for i = 0; i < m; i++ {
      for j = 0; j < n; j++ {
        fmt.Print(result[i][j], "\t")
      }
      fmt.Print("n")
    }
  }
}

Save the source code with the name of multiplymatrices.go, but adjust wrote with a file name that chills and don't forget the extension should .go

Compile & Run :

Here's how to compile source code manually:

$ go build multiplymatrices.go
$ ./multiplymatrices

You can run without having to compile it:

$ go run multiplymatrices.go

The Output of Program :

Picture of result the program

Conclusion:

From the results of the matrix multiplication program, it can be successfully run without any errors and display the results of the first matrix multiplication and the second matrix with a 3 x 3 order.