From c94eefc9126c724caad3b2d9d23fc560f26bad71 Mon Sep 17 00:00:00 2001
From: Ulriche Nguefack <ulriche.nguefack@informatik.hs-fulda.de>
Date: Wed, 7 Feb 2024 14:42:24 +0100
Subject: [PATCH] refactoring: factorial

---
 src/main/c/Calculator/calculator.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/c/Calculator/calculator.c b/src/main/c/Calculator/calculator.c
index 1ddf5fe..8d4cdc8 100644
--- a/src/main/c/Calculator/calculator.c
+++ b/src/main/c/Calculator/calculator.c
@@ -121,6 +121,13 @@ double getDoubleInput(const char *message) {
     scanf("%lf", &input);
     return input;
 }
+double factorial(double num) {
+    if (num == 0) {
+        return 1;
+    } else {
+        return num * factorial(num - 1);
+    }
+}
 
 int getIntInput(const char *message) {
     int input;