Added modifier flag

main.go

@@ -8,16 +8,22 @@ import (
 )
 
 func main() {
-	var surfaces, throws int
+	var surfaces, modifier, diceThrows int
 	rand.Seed(time.Now().Unix())
-
 	flag.IntVar(&surfaces, "s", 20, "Specify amount of die surfaces")
-	flag.IntVar(&throws, "t", 1, "Specify dice throws")
+	flag.IntVar(&diceThrows, "t", 1, "Specify dice diceThrows")
+	flag.IntVar(&modifier, "m", 0, "Stat modifier")
 	flag.Parse()
-	Cast(surfaces, throws)
+	total := Cast(surfaces, diceThrows)
+	if modifier != 0 {
+		fmt.Println("Without modifier:", total)
+		fmt.Println("With modifier:", total+modifier)
+	} else {
+		fmt.Println(total)
+	}
 }
 
-func Cast(dieSurfaces, castAmount int) {
+func Cast(dieSurfaces, castAmount int) int {
 	var (
 		casts       []int
 		cast, total int
@@ -32,6 +38,5 @@ func Cast(dieSurfaces, castAmount int) {
 	if castAmount > 1 {
 		fmt.Println(casts)
 	}
-
-	fmt.Println(total)
+	return total
 }