If you have never programmed before, then make sure to read the next section to find out precisely what an “if statement” is, and how to use it. if magic_number ...
is any macro expression that resolves to an integer. If the expression resolves to an integer other than zero, the expression is true and the %THEN clause is processed. If the expression resolves to ...
The IF expression is evaluated first. If the expression is true, execution flows through the THEN alternative. If the expression is false, the ELSE statement, if present, is executed. Otherwise, the ...
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