update dir

static/static_funciton.cpp

@@ -0,0 +1,20 @@
+#include<iostream> 
+using namespace std; 
+
+class Apple 
+{ 
+    public: 
+        // static member function 
+        static void printMsg() 
+        { 
+            cout<<"Welcome to Apple!"; 
+        } 
+}; 
+
+// main function 
+int main() 
+{ 
+    // invoking a static member function 
+    Apple::printMsg(); 
+} 
+