int choice = 0;
int a = 2023;
int b = 2003;
int AgeCal;
#include <DHT.h>
#define DHTPIN 13
#define DHTTYPE DHT22
DHT dht(DHTPIN,DHTTYPE);
int LED_1 = 2;   
int LED_2 = 4; 


void setup() {
  dht.begin();
  Serial.begin(115200);
  pinMode(LED_1, OUTPUT);
  pinMode(LED_2, OUTPUT);
  Serial.println("Hello World");
  Serial.println("This is my Microcontroller Final Examination");
  Serial.println("-----------------");
  Serial.println("| Function List |");
  Serial.println("-----------------");
  Serial.println("1.Let’s me introduce myself");
  Serial.println("2.What is the weather today?");
  Serial.println("3.LED make me fun!");
  Serial.println("4.Star has fallen in my eyes");
  Serial.println("***********************************");
  Serial.println("");
  AgeCal = a - b;
}
void Introduce(){
 Serial.println("You select CHOICE 1");
 Serial.println("Let's me introduce myself");
 Serial.println("-------------------------");
 Serial.println("My name is Teerapong Katiram");
 Serial.println("My nickname is Dom");
 Serial.print("I'm ");
 Serial.print(AgeCal);
 Serial.println(" years old.");
 Serial.println("Student ID : 65301051001");
 Serial.println("-------------------------");
}
  void Weather() {
  Serial.println("You select CHOICE 2");
  float t = dht.readTemperature();
  Serial.print ("Temp:");
  Serial.println (t);
  if(t <= 20){
  Serial.println("The weather is so cold today.");
  }
  else if(t > 20 && t <= 28 ) {
   Serial.println("The weather is not bad today."); 
  }
   else if (t >= 29){
   Serial.println("Too bad. It's very hot today. I'm gonna die right now."); 
  }
}
  void LED() {
  Serial.println("You select CHOICE 3");
  char x;
  x = 'A','B','C';
  if( x = 'A'){
  digitalWrite(LED_1, HIGH);
  delay(1000);
  digitalWrite(LED_1, LOW);
  delay(1000);
  digitalWrite(LED_1, HIGH);
  delay(1000);
  digitalWrite(LED_1, LOW);
  delay(1000);
  }
  if( x = 'B'){
  digitalWrite(LED_2, HIGH);
  delay(3000);
  digitalWrite(LED_2, LOW);
  delay(3000);
  digitalWrite(LED_2, HIGH);
  delay(3000);
  digitalWrite(LED_2, LOW);
  delay(3000);
  }
  if( x = 'C'){
  digitalWrite(LED_1, HIGH);
  delay(1000);
  digitalWrite(LED_1, LOW);
  delay(1000);
  digitalWrite(LED_2, HIGH);
  delay(1000);
  digitalWrite(LED_2, LOW);
  delay(1000);
  }
  
}
  void StarPattern(){
  Serial.println("You select CHOICE 4");
    int i, j, k;

    //for LOOP1
    for(i=1;i<=5;i++)
    {
        for(j=i;j<5;j++)
        {
            Serial.print(" ");
        }
        for(k=1;k<(i*2);k++)
        {
                Serial.print("*");
        }
        Serial.print("\n");
    }
    //for LOOP2
    for(i=7;i>=4;i--)
{
        for(j=i;j<8;j++)
        {
            Serial.print(" ");
        }
        for(k=7;k<(i*2);k++)
        {
            Serial.print("*");
        }
        Serial.print("\n");
    }
}
void Last(){
 Serial.println("***Please choose only 1-4.***");
}
void loop() {
  choice++;
  if(choice == 1){
     Introduce();
  }
  else if (choice == 2){
     Weather();
  }
  else if (choice == 3){
     LED();
  }
  else if (choice == 4){
     StarPattern();
  }
  else if (choice > 4 ){
     Last();
  }
  delay(2000); 
}