Challenge 3 — Solution

Task: Write a program that declares a variable message with the
value "Compiled and ready", but deliberately never uses it (no
Println call referencing it). Try go run on it, note the exact
compiler error, then fix it by actually printing the variable.

// Step 1 — the broken version (does NOT compile):
package main

import "fmt"

func main() {
	message := "Compiled and ready"
}

// Running "go run broken.go" produces:
// ./broken.go:7:2: declared and not used: message


// Step 2 — the fixed version:
package main

import "fmt"

func main() {
	message := "Compiled and ready"
	fmt.Println(message)
}


Expected output (fixed version):

Compiled and ready


Notes:
- "declared and not used" is one of the most common Go compiler
  errors a beginner will see — it is a compile-time error, not a
  warning, so the program will not run at all until it's fixed.
- The fix is either to use the variable (as shown) or to remove the
  declaration entirely if it genuinely isn't needed.
- This same strictness applies to imported packages: importing "fmt"
  without ever calling anything from it is also a compile error.