Makes the compiler treat the source code as C, which means that features specific to C++ cannot be used.

Makes the compiler treat the source code as C++.

Language support is decided automatically depending on the filename extension of the file being compiled:

c: files with this filename extension are treated as C source files.

cpp, .cc, .cp, .cxx, and .c++: files with these filename extensions will be treated as C++ source files.

Choose between these subsettings, or select both:

If you select none of the subsettings, the option has no effect.

Disables language extensions, but does not adhere strictly to the C or C++ dialect you have selected. Some very useful relaxations to C or C++ are still available.

Adheres strictly to the C or C++ dialect you have selected. This setting disables a great number of useful extensions and relaxations to C or C++.

Enables the C89 standard instead of Standard C.

Enables the C18 standard, also known as Standard C. This is the default standard used in the compiler, and it is stricter than C89. Features specific to C89 cannot be used. In addition, choose between:

Allow VLA, allows the use of C11 variable length arrays.

C++ inline semantics, enables C++ inline semantics when compiling a Standard C source code file.

Makes the compiler generate code to destroy C++ static variables that require destruction at program exit.