Default values of variables

Variables declared without an explicit initial value are given their zero value as default.


examples/zero/zero.go
package main

import "fmt"

func main() {
    var n int
    var f float64
    var s string
    var b bool

    fmt.Println(n) // 0
    fmt.Println(f) // 0
    fmt.Println(s) //    (empty string)
    fmt.Println(b) // false
}