编辑代码

package main
import(
    "fmt"
)
func JieCheng(x int)int{
    if x==0 || x==1{
        return x
    } 
    return JieCheng(x)*JieCheng(x-1)
}
func main () {
   sum:=JieCheng(5)
   fmt.Println(sum)
   
}