# Directive #elseif

Directive #elseif

  `#elif`
  `#elseif`

Description

  These work as a combined #else and #if without adding an extra level of nesting.

Example

      The following two are equvivalent:

  #ifdef A // Code for A. #else #ifdef B // Code for B. #else #ifdef C // Code for C. #else // Code for D. #endif #endif #endif

And

    #ifdef A
         // Code for A.
       #elif defined(B)
         // Code for B.
       #elseif defined(C)
         // Code for C.
       #else
         // Code for D.
       #endif

See also

  #if, #ifdef, #else, defined(), constant()