Небольшой пример if, elseif, else main.go:
Код:
package main
import "fmt"
func main() {
var age int
fmt.Print("How old are you?")
fmt.Scanf("%d", &age)
if age >=0 && age < 18 {
fmt.Println("You are very young!")
} else if age >= 18 && age < 100 {
fmt.Println("You are adult!")
} else {
fmt.Println("Error")
}
}