Although the compiler doesn't have a separate preprocessor, the directives described in … See more

The #nullable preprocessor directive sets the nullable annotation context and nullable warning context. This directive controls whether nullable annotations have effect, and whethe… See more

You use four preprocessor directives to control conditional compilation:
•#if: Opens a conditional compilation, where code is compiled only if the specified symbol is d… See more

You use the following two preprocessor directives to define or undefine symbols for conditional compilation:
•#define: Define a symbol.
•#undef: U… See more

You instruct the compiler to generate user-defined compiler errors and warnings, and control line information using the following directives:
•#error: Ge… See more

#pragma gives the compiler special instructions for the compilation of the file in which it appears. The instructions must be supported by the compiler. In other words, you can't u… See more