Add recursion

Author: pauliax

recursion.cpp

@@ -0,0 +1,23 @@
+// A C++ program to demonstrate working of recursion
+// https://www.geeksforgeeks.org/recursion/
+#include <bits/stdc++.h>
+using namespace std;
+ 
+void printFun(int test)
+{
+    if (test < 1)
+        return;
+    else 
+    {
+        cout << test << " ";
+        printFun(test - 1);
+        cout << test << " ";
+        return;
+    }
+}
+ 
+int main()
+{
+    int test = 3;
+    printFun(test);
+}