The Intel(R) C++ Compiler conforms to the ANSI/ISO standard ISO/IEC 9899:1999 for C language and ISO/IEC 14882:1998 for C++ language, refer to Intel C++ Compiler - ANSI C/C++ and OpenMP* compliance for details.
The option /Qstd=val or –std=val is for setting the specific conformance of ISO/IEC standards language.
The possible values of “val” are described below:
| [val] | Description | OS | Compiler versions |
| c89 | Conforms to the ISO/IEC 9899:1990 International Standard | Windows | 10.x, 11.x, 12.x, 13.0 |
| c99 | Conforms to The ISO/IEC 9899:1999 International Standard | Windows, Linux, MacOS X | 10.x, 11.x, 12.x, 13.0 |
| gnu89 | Conforms to ISO C90 plus GNU* extensions | Linux, MacOS X | 10.x, 11.x, 12.x, 13.0 |
| gnu++98 | Conforms to the 1998 ISO C++ standard plus GNU extensions | Linux, MacOS X | 10.x, 11.x, 12.x, 13.0 |
| c++0x | Enable support for the following C++0x features | Windows, Linux, MacOS X | 11.x, 12.x, 13.0 |
| c++11 | New name for C++0x | Windows, Linux, MacOS X | 13.0 |
The default for Intel C++ compilerare are as given below:
- Linux:
- -std=gnu89 - default for C, Conforms to ISO C90 plus GNU extensions.
- -std=gnu++98 - default for C++, Conforms to the 1998 ISO C++ standard plus GNU* extensions.
- Windows:
- /Qstd=xxx - The default is compatible with your version of Microsoft Visual Studio* C++.