#define Button  10
int sw, c=0;
void setup()
 {
  pinMode(Button, INPUT_PULLUP);
  Serial.begin(9600);
  Serial.println("Push button counter:");
}
void loop() 
{
  sw = digitalRead(Button);
  if (sw== 0)
  {
    delay(250);
    c++;
    Serial.println(c);
  }
}