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Asked: 2026-05-16T20:49:03+00:00

I am using g++ 4.4.1 and want to use nullptr , but I am

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I am using g++ 4.4.1 and want to use nullptr, but I am not being able to find which header file is required to be included. It does not seem to be keyword either, because my attempt to use it is rejected as

error: 'nullptr' was not declared in this scope
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1 Answer

  1. Editorial Team

    GCC 4.4.1 does not support nullptr.

    Support for nullptr was added in GCC 4.6.0:
    http://gcc.gnu.org/gcc-4.6/changes.html

    Improved experimental support for the
    upcoming C++0x ISO C++ standard,
    including support for nullptr (thanks
    to Magnus Fromreide), noexcept,
    unrestricted unions, range-based for
    loops (thanks to Rodrigo Rivas Costa),
    implicitly deleted functions and
    implicit move constructors.

    For earlier versions of GCC, if you want to experiment with nullptr you can try the workaround in this SO question:

    Can nullptr be emulated in GCC?

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