/* * The Go switch statement. */ package main import "fmt" func main() { tot := 0 for keepon := true ; keepon ; { // Prompt and read two items from the line. fmt.Printf("==> "); var cmd, arg string num, err := fmt.Scanln(&cmd, &arg) // Get the numerical equivent of the arg count := 1 if num == 2 { num, err = fmt.Sscan(arg, &count) if err != nil { count = 1 } } switch cmd { case "boring": fmt.Printf("boring") for i := 1 ; i < count ; i++ { fmt.Printf(" boring") } fmt.Printf("\n") case "add": tot += count fmt.Printf("Tot is %d\n", tot) case "say": fmt.Printf("You told me %s\n", arg) case "sink": fmt.Printf("#%d is down! Blub blub blub\n", count) case "stop", "quit", "halt": if count > 0 { if count > 1 { fmt.Printf("Sorry, can only stop " + "once\n"); } keepon = false } default: fmt.Printf("Unknown command %s\n", cmd) } } }