If

If sentences lets me examine one or more circumstances, and then acting in different way, depending on whether the circumstances fullfill some needs or not. An example:

(somebody fired at (x,y))
if there's a ship on (x,y)
  decrease the number of fields in this ship by 1
  write "Smack!"
else
  write "Plop"

Concept last updated: 24/09 2003.

Relations

is a kind of

Control structure

Other sources

Diverse opgaver - Selektion
Eksempler pÃ¥ programmerings-sprog - If
Start pÃ¥ Javascript 1.5; Jes Nyhus; 1.udgave (obl.) - 6. Betingede sÃ¦tninger