switch2.go

// controles switch2 switch.go
package main

import (
    "fmt"
    "time"
)

func main() {
    t := time.Now()
    switch { // switch true
    case t.Hour() < 12:
        fmt.Println("Bom dia!")
    case t.Hour() < 18:
        fmt.Println("Boa tarde!")
    default:
        fmt.Println("Boa noite!")
    }

}