# If Else

> Let's learn about Go's conditional statement

\ <br>

### If

* Use if to express conditional statements
  * ex)

    ```go
    package main

    import "fmt"

    func canIDrink(age int) bool {
     if age < 18 {
      return false
     }
     return true
    }

    func main() {
     fmt.Println(canIDrink(19))
    }

    ```

<br>

### Variable expression

* You can create a variable at the moment you use if
  * You can create a variable right inside the if, and use that variable right after the semicolon(`;`)
  * ex)

    ```go
    package main

    import "fmt"

    func canIDrive(age int) bool {
     // create a variable right incide of the "if"
     if koreanAge := age + 2; koreanAge < 18 {
      return false
     }
     return true
    }

    func main() {
     fmt.Println(canIDrive(20))
    }
    ```
  * By doing this, you can let other people reading the code know that *"the variable was created only for use in if-else conditions!"*


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