title: combine two or more conditions in one if statement
body: <p>Can we combine two or more conditions in one if statement?
  I know that in C# we can combine two or more conditions in an IF statement. Can we do it in Delphi?</p>
  
  <p>I have to check whether the user entered a value for the three Edit controls in the form. 
  Thanks for all the help</p>