Structure in Golang

PROGRAM:

package main

import "fmt"

/* group the variable using struct */
type Rectange struct {
    length int
    width  int
}

func Area(r Rectange) int {
    return r.length * r.width
}

func Perimeter(r Rectange) int {
    return 2 * (r.length * r.width)
}

func main() {
    /* create a variable of type Rectangle */
    var rect1 Rectange
    /* set the individual field of Rectange type */
    rect1.length = 5
    rect1.width = 8
    /* pass Rectangle type to function */
    area := Area(rect1)
    perimeter := Perimeter(rect1)
    fmt.Println("Length-", rect1.length, " Width-", rect1.width,
        " Area-", area, " Perimeter-", perimeter)

    rect2 := Rectange{15, 30}
    area = Area(rect2)
    perimeter = Perimeter(rect2)
    fmt.Println("Length-", rect2.length, " Width-", rect2.width,
        " Area-", area, " Perimeter-", perimeter)}
}

OUTPUT:

Length- 5  Width- 8  Area- 40  Perimeter- 80

Length- 15  Width- 30  Area- 450  Perimeter- 900