Conditionals if else

Context

In Go, if and if-else conditions are written without parentheses around the condition. Braces are required.

You can also use a short statement before the condition, with the same scope as the if block.

Example

Check if a number is positive, negative, or zero.

Code example

package main

import "fmt"

func main() {
    x := 5

    if x > 0 {
        fmt.Println(x, "is positive")
    } else if x < 0 {
        fmt.Println(x, "is negative")
    } else {
        fmt.Println(x, "is zero")
    }

    // Short statement
    if y := -3; y < 0 {
        fmt.Println(y, "is negative")
    }
    // y is not accessible here
}

Output

5 is positive
-3 is negative

Useful links

• Go spec: If statements
• Go by Example: If/Else