Added Strategy pattern

Author: cmjagtap

strategyPattern/main.cpp

@@ -0,0 +1,50 @@
+#include <iostream>
+using namespace std;
+
+class Strategy {
+public:
+    virtual void Action() = 0;
+    virtual ~Strategy() { }
+};
+
+class ConcreteStrategyBus :public Strategy {
+public:
+    void Action() {
+        cout << "Bus Vehicle" << endl;
+    }
+};
+
+class ConcreteStrategyCar :public Strategy {
+public:
+    void Action() {
+        cout << "car vehicle" << endl;
+    }
+};
+
+class ContextTransportation {
+public:
+    void setStratedy(Strategy *stg) {
+        _stg = stg;
+    }
+
+    void DoActionSelectVehicle() {
+        _stg->Action();
+    }
+
+private:
+    Strategy *_stg;
+};
+
+int main() {
+    Strategy *bus = new ConcreteStrategyBus();
+    Strategy *car = new ConcreteStrategyCar();
+    ContextTransportation *context = new ContextTransportation();
+    context->setStratedy(bus);
+    context->DoActionSelectVehicle();
+    context->setStratedy(car);
+    context->DoActionSelectVehicle();
+    delete bus;
+    delete car;
+
+    return 0;
+}