refactor: infinite kill exercise (loops)

13-loops/exercises/06-infinite-kill/main.go

@@ -17,12 +17,14 @@ package main
 //     then kill it using CTRL+C keys
 //
 // RESTRICTIONS
-//  1. Print one of those characters randomly: \ / |
+//  1. Print one of those characters randomly: \ / | -
 //  2. Before printing a character print also this
 //     escape sequence: \r
 //
 //     Like this: "\r/", or this: "\r|", and so on...
 //
+//  3. NOTE : If you're using Go Playground, use "\f" instead of "\r"
+//
 // HINTS
 //  1. Use `time.Sleep` to sleep.
 //  2. You should pass a `time.Duration` value to it.
@@ -36,6 +38,17 @@ package main
 //  lucky number lecture. Even then so, then just skip it.
 //
 //  You can return back to it afterwards.
+//
+// EXPECTED OUTPUT
+//  - The program should display the following messages in any order.
+//  - And, the first character (\, -, /, or |) should be randomly
+//    displayed.
+//  - \r or \f sequence will clear the line.
+//
+//  \ Please Wait. Processing....
+//  - Please Wait. Processing....
+//  / Please Wait. Processing....
+//  | Please Wait. Processing....
 // ---------------------------------------------------------
 
 func main() {

13-loops/exercises/06-infinite-kill/solution/main.go

@@ -17,15 +17,17 @@ func main() {
 	for {
 		var c string
 
-		switch rand.Intn(3) {
+		switch rand.Intn(4) {
 		case 0:
 			c = "\\"
 		case 1:
 			c = "/"
 		case 2:
 			c = "|"
+		case 3:
+			c = "-"
 		}
-		fmt.Printf("\r%s", c)
+		fmt.Printf("\r%s Please Wait. Processing....", c)
 		time.Sleep(time.Millisecond * 150)
 	}
 }