#undef

#undef name

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

Parameters

name

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

Examples

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

#undef     nonzero
#undef     USERCLASS

See Also

#define