Go Program to Print Matrix Items

In this Go program, we used the nested for loops to iterate and print the matrix items.

package main

import "fmt"

func main() {
    var rows, columns, i, j int

    var printmat [10][10]int

    fmt.Print("Enter the Matrix Rows and Columns = ")
    fmt.Scan(&rows, &columns)

    fmt.Print("Enter the Matrix Items = ")
    for i = 0; i < rows; i++ {
        for j = 0; j < columns; j++ {
            fmt.Scan(&printmat[i][j])
        }
    }

    fmt.Println("**** The List of Matrix Items ****")
    for i = 0; i < rows; i++ {
        for j = 0; j < columns; j++ {
            fmt.Printf("The Matrix Item at [%d][%d] Index Position = %d\n", i, j, printmat[i][j])
        }
    }
}

Enter the Matrix Rows and Columns = 2 2
Enter the Matrix Items =       
10 20
9 33
**** The List of Matrix Items ****
The Matrix Item at [0][0] Index Position = 10
The Matrix Item at [0][1] Index Position = 20
The Matrix Item at [1][0] Index Position = 9
The Matrix Item at [1][1] Index Position = 33

Golang Program to Print Matrix Items

In this Golang example, we used the length of a matrix (for i = 0; i < len(printmat); i++) as the for loop condition.

package main

import "fmt"

func main() {
    var i, j int

    var printmat [2][2]int

    fmt.Print("Enter the Matrix Items = ")
    for i = 0; i < 2; i++ {
        for j = 0; j < 2; j++ {
            fmt.Scan(&printmat[i][j])
        }
    }

    fmt.Println("**** The List of Matrix Items ****")
    for i = 0; i < len(printmat); i++ {
        for j = 0; j < len(printmat[i]); j++ {
            fmt.Printf("The Matrix Item at [%d][%d] Index Position = %d\n", i, j, printmat[i][j])
        }
    }
}

Enter the Matrix Items = 
99 88
77 55
**** The List of Matrix Items ****
The Matrix Item at [0][0] Index Position = 99
The Matrix Item at [0][1] Index Position = 88
The Matrix Item at [1][0] Index Position = 77
The Matrix Item at [1][1] Index Position = 55

In this Golang example, we used the nested for loop range to assign values to printmat matrix. Next, we used another one (for i, row := range printmat { for j, val := range row) to print those matrix items.

package main

import "fmt"

func main() {

    var printmat [3][3]int

    fmt.Print("Enter the Matrix Items = ")
    for k, r := range printmat {
        for l := range r {
            fmt.Scan(&printmat[k][l])
        }
    }

    fmt.Println("**** The List of Matrix Items ****")
    for i, row := range printmat {
        for j, val := range row {
            fmt.Printf("The Matrix Item at [%d][%d] Index Position = %d\n", i, j, val)
        }
    }
}