#undef

The #undef directive removes the current definition of the specified name. All subsequent occurrences of the name are processed without replacement.

Syntax

#undef name
 

Parameters

name

Specifies the name to be removed. This value is any combination of letters, digits, and punctuation.

Example

This example removes the definitions for the names nonzero and USERCLASS:

#undef     nonzero
#undef     USERCLASS 
 

See Also

#define