What is != in arduino programming? Answered

I found it in the DC motor test example from Adafruit Motorshield library.

The line goes like this:

void loop() {
  uint8_t i;

  Serial.print("tick");

  myMotor->run(FORWARD);
  for (i=0; i<255; i++) {
    myMotor->setSpeed(i); 
    delay(10);

I have no idea what it is pls help me.