Project 2 - Implement the Code for controlling the retraction and extension of Airplane’s landing gear

code 

#include
using namespace std;

  string lights,lever;
  void setLightsRed(){
   lights = "Red";
  }
   void setLightsGreen(){
   lights= "Green";
   }
   void setLightsOff(){
   lights = "Off";
   } 
  string getLights(){
   return lights;
  }
   void setLeverUp(){
   lever = "Up";
  }
   void setLeverDown(){
   lever = "Down";
   }
   string getLever(){
   return lever;
  }
  string takeOff()

  {

   if(getLights() != "Red" )
      return "Can't take off because lights are not red\n";
      setLeverUp();
      setLightsOff();
      return "Take Off Success\n";
    }

   string landing()

    {

   if(getLights() != "Green" )
     return "Can't land because lights are not Green\n";
     setLeverDown();
     return "Landing Success\n";
     }

int main()
  {
    setLightsRed();
    cout<    setLightsGreen();
    cout<

  return 0;
}