Siemens SIREC D200, Руководство пользователя

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246 43-TV-25-35 GLO Iss.4 Dec 06 UK
A5E01001767-04
Full Maths & Script Processing
Example 4
Commenting in Scripts
This is an example of how commenting can be used in scripts.
you can use the standard C++ commenting, inline comments use \\
for example
if ( A1 > 10 )
{
return 9; // If A1 greater then 10 return 9
}
or for block (single or multiline commenting the /* to open and */ to close, these are C style
comments and work as follows
if ( A1 > 10 )
{
return 9; /* If A1 greater then 10 return 9 */
}
for single line or
if( A1 > 10 )
{
/* if A1 is greater then 10 then return 9
*/
return 9;
}
these are also useful for commenting out code to try different things, for example
if( A1 > 10 )
{
return 9;
}
/*
else
{
return 20;
}
*/
return A1;
Here the else statement is "commented out" so it won't be included but can easily be re-in-
troduced if required.
Maths Error Messages
When the Maths functionality is processing through the scrips you have written it will carry
out Syntax and other checks. When it comes across operations, functions, brackets, etc.
not expected or permitted it will report an error. However, the fault being reported may be
on a previous line caused by the missing or incorrect function.