(PCC)::[How-to-use-fact-function-calls-itself-until-it-reaches-the-base-case-of-fact(0)-in-go-language]::[go]
package main
import "fmt"
func fact(n int) int {
if n == 0 {
return 1
}
return n * fact(n-1)
}
func main() {
fmt.Println(fact(7))
} 