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Solution Review: Make a Rectangle

Solution Review: Make a Rectangle

This lesson discusses the solution to the challenge given in the previous lesson.

We'll cover the following...
Go (1.6.2)
package main
import "fmt"
type Rectangle struct { // struct of type Rectangle
    length, width int
}
func (r *Rectangle) Area() int {    // method calculating area of rectangle
    return r.length * r.width
}
func (r *Rectangle) Perimeter() int { // method calculating perimeter of rectangle
    return 2* (r.length + r.width)
}
func main() {
    r1 := Rectangle{4, 3}
    fmt.Println("Rectangle is: ", r1)
    fmt.Println("Rectangle area is: ", r1.Area()) // calling method of area
    fmt.Println("Rectangle perimeter is: ", r1.Perimeter()) // calling method of perimeter
}

In the above code, at line 4, we make a struct Rectangle containing two fields length and width of type int. Then, we have two important methods Area() and Perimeter(). Look at the header of Area ...