Calculate Area and Circumference of Circle in Go

I this article I would like to share with you how to write a program using Go programming language to calculate the area and circumference of the circle.

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Program Listing

/* circle.go
   Author  : Mr. Jake Rodriguez Pomperada, MAED-IT,MIT
   Date    : July 10, 2020   Friday   7:58 PM
   Website : http://www.jakerpomperada.com
   Emails : jakerpomperada@gmail.com and jakerpomperada@yahoo.com
*/

package main
 
import "fmt"
 
 const PI float64 = 3.14 

func main(){
    var rad float64
    var ci float64
    var area float64
    fmt.Print("\n")
    fmt.Print("\tCalculate Area and Circumference of Circle")
    fmt.Print("\n\n")
    fmt.Print("\tEnter radius of Circle : ")
    fmt.Scanln(&rad)
    area = PI * rad * rad 
    fmt.Print("\n")
    fmt.Print("\tArea of Circle is : ")
    fmt.Printf("%0.2f ",area)
    ci = 2 * PI * rad
    fmt.Print("\n\n")
    fmt.Print("\tCircumference of Circle is : ")  
    fmt.Printf("%0.2f ",ci)
    fmt.Print("\n\n")
    fmt.Print("\n")
    fmt.Print("\tEnd of Program")
    fmt.Print("\n")
}