go_workshop/chapter_01/exercise_1.09/main.go

package main

import "fmt"

func main() {

  // Main course
  var total float64 = 2 * 13
  fmt.Println("Sub:", total)

  // Drinks
  total = total + (4 * 2.25)
  fmt.Println("Sub:", total)

  // Discount
  total = total - 5
  fmt.Println("Sub:", total)

  // 10% Tip
  tip := total * 0.1
  fmt.Println("Tip:", tip)

  total = total + tip
  fmt.Println("Total:", total)

  // Split bill
  split := total / 2
  fmt.Println("Split:", split)

  // Reward every 5th visit
  visitCount := 24
  visitCount = visitCount + 1
  remainder := visitCount % 5
  if remainder == 0 {
    fmt.Println("With this visit, you've earned a reward.")
  }

}