ASML C Coding Standard

Rule: 6.8.4.2.a

Synopsis:	The switch expression shall not contain any logical expression (one or more of the ">", ">=", "<", "<=", "==", "!=", "&&", "\|\|" or "!" operators).
Language:	C
Severity Level:	5
Category:	Statement and Blocks

Description:

Justification

Using relational or logical operators in a "switch" expression is very likely to be wrong and is at best confusing. Consider the use of an "if" statement.

Example

#define CCBB_THE_CHOICE 1
switch (option == pick) /* WRONG */
{
case CCBB_THE_CHOICE:
   /* any statement */
   break;
default:
   /* any statement */
   break;
}