#include <Keypad.h>
int led=11,x=12,y=13;
  const uint8_t rows=4;
  const uint8_t cols=4;
  char keys[rows][cols]={
    {'1','2','3','A'},
    {'4','5','6','B'},
    {'7','8','9','C'},
    {'*','0','#','D'}
  };
  uint8_t col[cols]={5,4,3,2};
  uint8_t row[rows]={9,8,7,6};

  Keypad keypad= Keypad(makeKeymap(keys),row,col,rows,cols);

  // put your setup code here, to run once:
void setup() {
  Serial.begin(9600);
  pinMode(led, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
char key=keypad.getKey();
if(key!=NO_KEY){
  Serial.println(key);
}
  if(key=='5'){
  digitalWrite(led, HIGH);
  }
  else{
    digitalWrite(led, LOW);
  }
 if(key=='4'){
  digitalWrite(x, HIGH);
  }
  else{
    digitalWrite(x, LOW);
  }
 if(key=='6'){
  digitalWrite(y, HIGH);
  }
  else{
    digitalWrite(y, LOW);
  }
}