Challenge 3 — Solution

Task: Write a program with grade := "B". Use a switch statement to
print a description for "A" ("Excellent"), "B" or "C" together
("Satisfactory"), and a default case ("Needs improvement") for
anything else.

package main

import "fmt"

func main() {
	grade := "B"

	switch grade {
	case "A":
		fmt.Println("Excellent")
	case "B", "C":
		fmt.Println("Satisfactory")
	default:
		fmt.Println("Needs improvement")
	}
}


Expected output:

Satisfactory

Notes:
- case "B", "C": matches either value in a single case, avoiding two
  separate cases that would otherwise print the same thing.
- Go's switch can compare strings directly, not just numbers — there
  is no requirement to convert anything first.
- No break statements appear anywhere — Go's switch never falls
  through to the next case automatically, unlike JavaScript's
  switch, where missing a break would cause "Satisfactory" to fall
  into "Needs improvement" too.