From 5414e495c1e055a7ba3701b9b18e9442b35fce03 Mon Sep 17 00:00:00 2001
From: WDF-VIORuleZ <leon_gross@protonmail.ch>
Date: Sun, 28 Oct 2018 21:16:07 +0100
Subject: [PATCH] adding recursive countdown function

---
 c++/countdwon.cpp | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 c++/countdwon.cpp

diff --git a/c++/countdwon.cpp b/c++/countdwon.cpp
new file mode 100644
index 0000000..7d23013
--- /dev/null
+++ b/c++/countdwon.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <stdlib.h>
+
+unsigned short countdown(unsigned short num)
+{
+    if(!num)
+    {
+        std::cout << num << std::endl;
+        return countdown(num--);
+    }
+    else
+    {
+        std::cerr << "Boooom" << std::endl;
+        exit(-1);
+    }
+}
+
+int main(int argc, char const *argv[])
+{
+    if(argc == 2)
+    {
+        countdown(static_cast<unsigned int>argv[1]);
+        return EXIT_SUCCESS;
+    }
+    else
+    {
+        std::cerr << "usage: countdown [NUM]" << std::endl;
+        return EXIT_FAILURE;
+    }
+}