//degrement
int x=2,y=2;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("int x=2;");
  Serial.println("int y=2;");
  Serial.println(">x+=4;/x=x+4;");
  Serial.print("\t=>x=");
  Serial.print(x);
  Serial.print("+");
  Serial.print(4);
  x+=4;
  Serial.print("=");
  Serial.println(x);

  Serial.println(">y+=x;/y=y+x;");
  Serial.print("\t=>y=");
  Serial.print(y);
  Serial.print("+");
  Serial.print(x);
  y+=x;
  Serial.print("=");
  Serial.print(y);
  }
  void loop() {
    // put your main code here, to run repeatedly:
    }