public:

void on() {

cout << "The light is on\n";

}

void off() {

cout << "The light is off\n";

}

public:

LightOnCommand(Light *light) : mLight(light) {}

void execute(){

mLight->on();

}

private:

Light *mLight;

public:

LightOffCommand(Light *light) : mLight(light) {}

void execute(){

mLight->off();

}

private:

Light *mLight;

public:

void setCommand(Command *cmd) {

mCmd = cmd;

}

void buttonPressed() {

mCmd->execute();

}

private:

Command *mCmd;

// Receiver

Light *light = new Light;

// concrete Command objects

LightOnCommand *lightOn = new LightOnCommand(light);

LightOffCommand *lightOff = new LightOffCommand(light);

// invoker objects

RemoteControl *control = new RemoteControl;

// execute

control->setCommand(lightOn);

control->buttonPressed();

control->setCommand(lightOff);

control->buttonPressed();

delete light, lightOn, lightOff, control;

return 0;

}