package main

 

import (

"fmt"

)

 

type Rect struct {

X, Y,Area,Length float64

}

 

func (r *Rect) CalArea() {

r.Area = r.X*r.Y

}

func (r Rect) CalLength() {

r.Length = 2*(r.X+r.Y)

}

 

func main() {

r1 := Rect{3, 4, 0, 0}

r1.CalArea()

r1.CalLength()

fmt.Println(r1.Area)

fmt.Println(r1.Length)

 

r2 := &Rect{3, 4, 0, 0}

r2.CalArea()

r2.CalLength()

fmt.Println(r2.Area)

fmt.Println(r2.Length)

}