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enum { max = 15 };
int a[max]; /* OK */
const int *p;
p = &max; /* error: '&' on constant */
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Exceptions
DCL00-EX1 Constant values that may be passed as compile-time arguments must be macro definitions, as shown by this example:
| Code Block |
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#ifndef MYPORTNUMBER /* might be passed on compile line */
# define MYPORTNUMBER 1234
#endif
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Risk Assessment
Using ordinary variables to hold constants instead of using enumeration constants or const-qualified objects can result in a value intended to be constant being changed at runtime.
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