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Getting error when try to compile this program

int ledPin= 13;

void setup() {
  // put your setup code here, to run once:
  pinMode(ledPin, OUTPUT);
 }

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(ledPin, HIGH);
  delay(1000);
  digitalWrite(ledPin, LOW);
  delay(1000);
}
Arduino: 1.6.4 (Windows 7), Board: "Arduino Uno"

Sketch uses 1,068 bytes (3%) of program storage space. Maximum is 32,256 bytes.

Global variables use 11 bytes (0%) of dynamic memory, leaving 2,037 bytes for local variables. Maximum is 2,048 bytes.

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x39

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x39

avrdude: stk500_recv(): programmer is not responding

Problem uploading to board.  See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x39

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x39

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x39

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x39

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x39

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x39

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x39

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x39

  This report would have more information with
  "Show verbose output during compilation"
  enabled in File > Preferences.

Did you do this? Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.