Go Goto

package main
import (
   "fmt"
)
func main() {
   var input int
Loop:
   fmt.Print("You are not eligible to vote ")
   fmt.Print("Enter your age ")
   fmt.Scanln(&input)
   if (input <= 17) {
      goto Loop
   } else {
      fmt.Print("You can vote ")
   }
}

You are not eligible to vote 
Enter your age 15
You are not eligible to vote 
Enter your age 18
You can vote