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C++ - #if or elif The above answer is true. #if or #elif can be used to evaluate constant expressions and macro expressions. The #if directive checks whether the constant-expression is true (nonzero). The constant expression in an #if directive is subject to text replacement and can contain references to identifiers defined in previous #define directives. The #elif directive performs a task similar to the combined use of the else-if statements in C. The #if directive, with the #elif, #else, and #endif directives, controls the compilation of portions of a source file. Prajakta Pandit 01-25-2017 01:32 AM

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