Checking for C 11 Support

In C , determining if a compiler supports specific features of C 11 is crucial for ensuring compatibility. Some methods exist to perform this check at compile-time, including:

Using __cplusplus Constant

The __cplusplus constant, defined by the preprocessor, indicates the supported C standard version. For example:

#if __cplusplus 
Using Boost Defines
Boost provides defines (__has_feature(feature_name)) that enable checking for specific C  11 features, such as:
#if __has_feature(cxx_automatic_resource_management)
  // C  11 has automatic resource management
#endif
Example: Checking for Variadic Templates
Suppose you want to use variadic templates, a C  11 feature. You can check for its support using the following code:
#ifndef VARIADIC_TEMPLATES_SUPPORTED

#error "Your compiler doesn't support variadic templates.  :("

#else

template 
class Tuple
{
    // ...
}

#endif