Conrad C-Control Pro Mega Series, Руководство пользователя

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116 Compiler
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5.3.6 Control Structures
Control structures allow to change the program completion depending on expressions, variables or
external influences.
5.3.6.1 Do Loop While
With a Do ... Loop While construct the instructions can depending on a condition be repeated in a
loop:
Do
Instructions
Loop While Expression
The instructions are being executed. At the end the Expression is evaluated. If the result is unequal
0 then the execution of the expression will be repeated. The entire procedure will constantly be
repeated until the Expression takes on the value 0.
Examples:
Do
a=a+ 2
Loop While a< 10
Do
a=a* 2
x=a
Loop While a
The essential difference between the Do Loop While loop and the normal Do While loop is the
fact that in a Do Loop While loop the instruction is executed at least once.
Exit Instruction
An Exit instruction will leave the loop and the program execution starts with the next instruction after
the Do Loop While loop.
Example:
Do
a=a+ 1
If a> 10 Then
Exit ' Will terminate loop
End If
Loop While 1 ' Endless loop