static_member_variable.cpp

Author: keineahnung2345

static_member_variable.cpp

@@ -0,0 +1,27 @@
+#include <vector>
+#include <string>
+#include <iostream>
+
+//https://www.learncpp.com/cpp-tutorial/static-member-variables/
+
+using namespace std;
+
+class Visitor {
+private:
+    static int count; // this only "declares" the variable!
+
+public:
+    Visitor() { ++count; }
+    static int get() { return count; }
+};
+
+int Visitor::count = 10; // actually "defines" the variable
+
+int main(int argc, char** argv) {
+    Visitor v1;
+    cout << Visitor::get() << endl; // 11
+    Visitor v2;
+    cout << Visitor::get() << endl; // 12
+
+    return 0;
+}