003.1

divisibility_by_7.v

@@ -1,19 +1,20 @@
 import readline
 
-fn check_divisibility(e int, g int) {
-	b := e / 10
-	c := e % 10
-	d := b - 2 * c
-	mut f := g
-	if d > 99 {
-		f = f + 1
-		check_divisibility(d, f)
+fn seven(b int) {
+	mut c := b
+	mut d := 0
+	mut e := 0
+	mut f := 0
+	for c > 99 {
+		d = c / 10
+		e = c % 10
+		c = d - 2 * e
+		f += 1
+	}
+	if c % 7 == 0 {
+		println([c, f])
 	} else {
-		if d % 7 == 0 {
-			println([d, f])
-		} else {
-			println('The number is not divisible by 7')
-		}
+		println('The number is not divisible by 7')
 	}
 }
 
@@ -23,7 +24,5 @@ fn main() {
 
 	a := answer.int()
 
-	if a > 99 {
-		check_divisibility(a, 1)
-	}
+	seven(a)
 }