Rule A18-0-1 (required, implementation, automated)
The C library facilities shall only be accessed through C++ library headers.
Rationale
C libraries (e.g. <stdio.h>) also have corresponding C++ libraries (e.g.
## See also
MISRA C++ 2008 [7]: Rule 18-0-1 (Required) The C library shall not be used.
HIC++ v4.0 [9]: 1.3.3 Do not use the C Standard Library .h headers.