Flow Control

Blocks

XJEase source code is divided into blocks that start with a flow control statement and are terminated with the END keyword. The code within a section is treated as a single block of statements which can be embedded into a single flow control statement. One example is the IF statement:

IF x THEN          // This line begins the block
  x := a;
  b := a;
  a := x;
END;               // This ends it

The block begins after the THEN symbol and finishes at the END.

Flow control types

The flow of control is directed in an XJEase program through the following control statements:

• The IF statement
• The SWITCH statement
• Looping statements