ZBasicRef - page 4 of 206

4 of 206

ZBasic Language Reference

ZX Microcontroller Family

Defining Arrays of Variables

.....................................................................................19

Defining Subroutines..................................................................................................20

Defining Functions......................................................................................................22

2.4 Expressions

....................................................................................................................24

2.4.1 Operator Precedence............................................................................................24

2.4.2 Operator Associativity

...........................................................................................25

2.4.3 Arithmetic Operators

.............................................................................................25

2.4.4 Logical Operators

..................................................................................................26

2.4.5 Comparison Operators..........................................................................................26

2.4.6 Miscellaneous Operators......................................................................................27

2.4.7 No “Short Circuit” Evaluation

...............................................................................27

2.5 Statements......................................................................................................................27

2.5.1 Assignment Statement..........................................................................................27

2.5.2 Call Statement........................................................................................................28

2.5.3 CallTask Statement

...............................................................................................28

2.5.4 Console.Write and Console.WriteLine Statements..........................................29

2.5.5 Debug.Print Statement..........................................................................................29

2.5.6 Do-Loop Statement and Variants........................................................................30

2.5.7 Exit Statement

........................................................................................................31

2.5.8 For-Next Statement

...............................................................................................32

2.5.9 Goto Statement

......................................................................................................33

2.5.10 If-Then-Else Statement.......................................................................................34

2.5.11 Single-line If-Then Statement

............................................................................35

2.5.12 Select-Case Statement.......................................................................................36

2.5.13 Set Statement

......................................................................................................37

2.5.14 While-Wend Statement.......................................................................................37

2.5.15 With Statement

....................................................................................................38

2.6 Literals

.............................................................................................................................38

2.6.1 Boolean Literals

.....................................................................................................39

2.6.2 Numeric Literals - Integral Values.......................................................................39

2.6.3 Numeric Literals - Real Values

............................................................................39

2.6.4 String Literals..........................................................................................................40

2.6.5 Built-in Binary Constants

......................................................................................40

2.7 Comments.......................................................................................................................40

2.8 Line Continuation and Multiple Statements Per Line...............................................40

2.9 Persistent Variables.......................................................................................................41

2.10 Program Memory Data Items.....................................................................................43

2.11 String Types

.................................................................................................................46

2.11.1 Bounded Strings

..................................................................................................47

2.11.2 Fixed-Length Strings...........................................................................................47

2.12 Variable Initialization

...................................................................................................47

2.13 Type Conversions........................................................................................................48