Try first program on arduino

Hello, this is the second part of arduino tutorial series.
Hope you have successfully installed arduino integrated development environment and the required driver.
Now we will try to do something useful using it.
In AVR studio there are some critical steps like making .hex file then burning it to microcontroller using burner. In case of arduino these middle steps are automatically done by arduino IDE itself.  In arduino there remains a boot loader in the microcontroller chip. This makes burning  the program so easy. You can program it so many time. This is why it is very good for beginner.
The program written for arduino is called sketch.
First we will try to blink a LED that is connected with arduino boared itself.
Let’s write the program
/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the Uno and
  Leonardo, it is attached to digital pin 13. If you're unsure what
  pin the on-board LED is connected to on your Arduino model, check
  the documentation at http://arduino.cc

  This example code is in the public domain.

  modified 8 May 2014
  by Scott Fitzgerald
*/

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin 13 as an output.
  pinMode(13, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);              // wait for a second
  digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);              // wait for a second
}

Upload the sketch . then see what happens!