Condition

IF (logical expression) THEN command;

If we are writing a program we cannot know how the commands are working - Answer of a user, non-function of printer. We must forecast all of these, and program must be reliable in this way. For this are tehere a CONDITIONS, which can furcate a program . In depending up to a condition, they make up some command, prepared for this situation.

Full Condition:

Short form

If is condition done, program start compliting commands between BEGIN and END.. If condition isn't done, there will be a acomplished a commands behind of ELSE. This commands are in a BODY of BEGIN and END.

There are two important things. At 1st.: in a fulll condition behind 1st END, there aren't a ; , because before ELSE we cannot to write a ;. 2nd: We need to write BEGIN - END to the condition only if a condition body have only one command....If there are more then one command, you need to write a BEGIN - END.

Logically expressions, conditions.

Logically expressions are most used in programs, which are confronting two numbers or two and more variables.

For the confrontation we have:

Other condition we can use a few connections - AND, OR, NOT.

Nasledovná tabužka ukazuje jednoduché príklady.