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—fornext [2020/02/21 13:44] – neils
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 +====== FOR ... NEXT ======
  
 +Syntax:
 +
 + for <byte or int variable> = <byte or int initial_value> to <byte or int end_value> [step <byte or int step>]
 + [statements...]
 + next [<variable>]
 +
 +The ''FOR ... NEXT'' construct will assign the result of ''initial_value'' to the given variable, then iterate the variable until it reaches the value of  ''end_value'', executing the commands between ''FOR'' and ''NEXT''  as many times as necessary. 
 +
 +If ''step'' is provided, the variable will be incremented or decremented with ''step''. ''step'' defaults to 1 otherwise.
 +
 +The types of ''initial_value'', ''end_value'' and ''step'' must match that of  ''variable''.
 +
 +''FOR ... NEXT'' constructs can be nested.
 +
 +**Note #1**: ''end_value'' is evaluated only once, before starting the loop.
 +
 +**Note #2**: the variable name after the ''NEXT'' statement is not mandatory since version 2.3.
 +
 +**Note #3**: the runtime library will not check the consistency of your ''FOR ... NEXT'' blocks. If there is a ''NEXT'' without ''FOR'', for example, the program will likely break.