void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
 int x =79;//คะเเนนสอบ 0-100
 if(x<49){ 
  Serial.println("Your grad is 0");
  }else if(x<=54){ 
  Serial.println("Your grad is 1");
  }else if(x<=59){
  Serial.println("Your grad is 1.5"); 
  }else if(x<=64){ 
  Serial.println("Your grad is 2");
  }else if(x<=69){
  Serial.println("Your grad is 2.5");
  }else if(x<=74){
  Serial.println("Your grad is 3");
  }else if(x<=79){
  Serial.println("Your grad is 3.5");
    }else if(x<=100){
  Serial.println("Your grad is 3.5");
    }



}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}