package main
import "fmt"
func main() {
const ( // iota is reset to 0
a = 1 << iota // a == 1
b = 1 << iota // b == 2
c = 3 // c == 3 (iota is not used but still incremented)
d = 1 << iota // d == 8
)
fmt.Printf("a: %d, b: %d, c: %d, d: %d\n", a, b, c, d)
}