Advanced Features of C++ Preprocessor Directives
Special Preprocessor Directives #error Directive The #error directive allows the preprocessor to output an error message during the compilation process and stop compilation. This is very useful for forcing developers to check the code when certain conditions are not met. For example: #include <iostream> #define USE_FEATURE_X 0 int main() { #if USE_FEATURE_X // Code using … Read more