Microsoft Dynamics NAV

Flow control

Process flow control functions are the functions that execute the decision making and resultant logic branches in executable code. IF–THEN-ELSE, discussed in Chapter 6, Introduction to C/SIDE and C/AL, is also a member of this class of functions. Here we will discuss the following:

• REPEAT-UNTIL
• WHILE-DO
• FOR-TO and FOR-DOWNTO
• CASE-ELSE
• WITH-DO
• QUIT, BREAK, EXIT, and SKIP

REPEAT-UNTIL

REPEAT–UNTIL allows us to create a repetitive code loop which REPEATs a block of code UNTIL a specific conditional expression evaluates to TRUE. In that sense, REPEAT–UNTIL defines a block of code, operating somewhat like the BEGIN–END compound statement structure which we covered in Chapter 6, Introduction to C/SIDE and C/AL. REPEAT tells the system to keep ...