int ledm=13;
int btnm=10;
int btnstatusm=0;

void setup() {
  // put your main code here, to run repeatedly:
pinMode (ledm, OUTPUT);
pinMode (btnm, INPUT);
}

void loop() {
  btnstatusm = digitalRead(btnm);
 // put your main code here, to run repeatedly:
 if(btnstatusm==HIGH) {
 digitalWrite(ledm, HIGH);
  }else{
  digitalWrite(ledm, LOW);
  }
}