How to get rid of decimals or add them? Answered

So here's my code.

void loop()
{
  int pot = analogRead(A0);
  float xval = pot * (10.0 / 1023.0);
  Serial.println(xval);
}

When I open up serial monitor, I get a number (1-10 depending on my potentiometer) and two decimals. How do I make go in whole number increments? 1, 2, 3, etc? Can you show me the code and explain it?

Also, here's another example

centimeters = (xval * 2.54);
Serial.print(centimeters);

In this example, I only get a whole number. Can somebody show me some code to make it show decimals? Explain some code?

Thanks!