void setup() {
 Serial.begin(9600);
  float a,b; 
  float c;
  a=13;
  b=5;
  c=a+b;
  Serial.print("hasil a+b= ");
  Serial.println(c);
  c=a-b;
  Serial.print("hasil a-b= ");
  Serial.println(c);
  c=a*b;
  Serial.print("hasil a*b=  ");
  Serial.println(c);
  c=a/b;
  Serial.print("hasil a/b=  ");
  Serial.print(c);


}

void loop() {
  // put your main code here, to run repeatedly:

}