ヌルポインタ (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "ヌルポインタ" in Japanese language version.

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c-faq.com

cppreference.com

en.cppreference.com

cpprefjp.github.io

infoq.com

kouno.jp

open-std.org

opengroup.org

pubs.opengroup.org

stackoverflow.com

wikipedia.org

en.wikipedia.org

  • Stroustrup, Bjarne (March 2001). “Chapter 5: Pointers, Arrays, and Structures: 5.1.1: Zero”. The C++ Programming Language英語版 (14th printing of 3rd ed.). United States and Canada: Addison–Wesley. p. 88. ISBN 0-201-88954-4. "In C, it has been popular to define a macro NULL to represent the zero pointer. Because of C++'s tighter type checking, the use of plain 0, rather than any suggested NULL macro, leads to fewer problems. If you feel you must define NULL, use
    const int NULL = 0;
    The const qualifier (§5.4) prevents accidental redefinition of NULL and ensures that NULL can be used where a constant is required."