Developer Guide and Reference

Contents

std, Qstd

Tells the compiler to conform to a specific language standard.

Syntax

Linux:
-std=
val
Windows:
/Qstd:
val
(C++ only)
Arguments
val
Specifies the specific language standard to conform to. Possible values are:
c++2b
Enables support for the Working Draft for ISO C++ 2023 DIS standard.
gnu++2b
Enables support for the Working Draft for ISO C++ 2023 DIS standard plus GNU extensions.
c++20
Enables support for the 2020 ISO C++ DIS standard.
gnu++20
Enables support for the 2020 ISO C++ DIS standard plus GNU extensions.
c++17
Enables support for the 2017 ISO C++ standard with amendments.
gnu++17
Enables support for the 2017 ISO C++ standard with amendments plus GNU extensions.
c++14
Enables support for the 2014 ISO C++ standard with amendments.
gnu++14
Enables support for the 2014 ISO C++ standard with amendments plus GNU extensions.
c++11
Enables support for the 2011 ISO C++ standard with amendments.
gnu++11
Enables support for the 2011 ISO C++ standard with amendments plus GNU extensions.
c++0x
Enables support for the 2011 ISO C++ standard.
gnu++0x
Enables support for the 2011 ISO C++ standard plus GNU extensions.
c++98
and
c++03
Enables support for the 1998 ISO C++ standard with amendments.
gnu++98
and
gnu++03
Enables support for the 1998 ISO C++ standard with amendments plus GNU extensions.
c2x
Enables support for the Working Draft for ISO C2x standard.
gnu2x
Enables support for the Working Draft for ISO C2x standard plus GNU extensions.
c18
and
c17
Enables support for the 2017 ISO C standard.
Support for c17 can also be enabled by value iso9899:2017.
Support for c18 can also be enabled by value iso9899:2018.
gnu18
and
gnu17
Enables support for the 2017 ISO C standard plus GNU extensions.
c11
Enables support for the 2011 ISO C standard.
Support for this standard can also be enabled by value iso9899:2011.
gnu11
Enables support for the 2011 ISO C standard plus GNU extensions.
c99
Enables support for the 1999 ISO C standard.
Support for this standard can also be enabled by value iso9899:1999.
gnu99
Enables support for the 1999 ISO C standard plus GNU extensions.
c90
and
c89
Enables support for the 1990 ISO C standard.
Support for this standard can also be enabled by value iso9899:1990.
gnu90
and
gnu89
Enables support for the 1990 ISO C standard plus GNU extensions.
Default
Default for DPC++ Linux:
-std=gnu++17
Enables support for the 2017 ISO C++ standard with amendments plus GNU extensions.
Default for C++ Linux:
-std=gnu++14
Enables support for the 2014 ISO C++ standard with amendments plus GNU extensions.
Default for C Linux:
-std=gnu17
Enables support for the 2017 ISO C standard plus GNU extensions.
Default for DPC++ Windows:
-std=c++17
Enables support for the 2017 ISO C++ standard with amendments.
Default for C++ Windows:
-std=c++14
Enables support for the 2014 ISO C++ standard with amendments plus GNU extensions.
Description
This option tells the compiler to conform to a specific language standard.
IDE Equivalent
Visual Studio:
Language > C/C++ Language Support
Eclipse:
Language > ANSI Conformance
Alternate Options
None

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.