1. Which of the following are correct preprocessor directives in C? 1: #ifdef 2: #if 3: #elif 4: #undef
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By: guest on 01 Jun 2017 06.00 pm
The macros #ifdef #if #elif are called conditional macros. The macro #undef undefine the previosly declared macro symbol. Hence all the given statements are macro preprocessor directives.