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  2. Apéry's constant - Wikipedia

    en.wikipedia.org/wiki/Apéry's_constant

    It has an approximate value of [1] ζ(3) ≈ 1.20205 69031 59594 28539 97381 61511 44999 07649 86292 … (sequence A002117 in the OEIS). It is named after Roger Apéry, who proved that it is an irrational number.

  3. Year 2038 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2038_problem

    [a] Thus, a signed 32-bit integer can only represent integer values from −(2 31) to 2 31 − 1 inclusive. Consequently, if a signed 32-bit integer is used to store Unix time, the latest time that can be stored is 2 31 − 1 (2,147,483,647) seconds after epoch, which is 03:14:07 on Tuesday, 19 January 2038. [8]

  4. C (programming language) - Wikipedia

    en.wikipedia.org/wiki/C_(programming_language)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 13 December 2024. General-purpose programming language "C programming language" redirects here. For the book, see The C Programming Language. Not to be confused with C++ or C#. C Logotype used on the cover of the first edition of The C Programming Language Paradigm Multi-paradigm: imperative (procedural ...

  5. Computer programming - Wikipedia

    en.wikipedia.org/wiki/Computer_programming

    Computer programming or coding is the composition of sequences of instructions, called programs, that computers can follow to perform tasks. [1] [2] It involves designing and implementing algorithms, step-by-step specifications of procedures, by writing code in one or more programming languages.

  6. C++ - Wikipedia

    en.wikipedia.org/wiki/C++

    In 1989, C++ 2.0 was released, followed by the updated second edition of The C++ Programming Language in 1991. [32] New features in 2.0 included multiple inheritance, abstract classes, static member functions, const member functions, and protected members. In 1990, The Annotated C++ Reference Manual was published. This work became the basis for ...

  7. Programming language - Wikipedia

    en.wikipedia.org/wiki/Programming_language

    This is an accepted version of this page This is the latest accepted revision, reviewed on 20 December 2024. Language for communicating instructions to a machine The source code for a computer program in C. The gray lines are comments that explain the program to humans. When compiled and run, it will give the output "Hello, world!". A programming language is a system of notation for writing ...

  8. Python (programming language) - Wikipedia

    en.wikipedia.org/wiki/Python_(programming_language)

    For example, the expression a < b < c tests whether a is less than b and b is less than c. [125] C-derived languages interpret this expression differently: in C, the expression would first evaluate a < b, resulting in 0 or 1, and that result would then be compared with c. [126] Python uses arbitrary-precision arithmetic for all

  9. Calcifediol - Wikipedia

    en.wikipedia.org/wiki/Calcifediol

    Calcifediol, also known as calcidiol, 25-hydroxycholecalciferol, or 25-hydroxyvitamin D 3 (abbreviated 25(OH)D 3), [1] is a form of vitamin D produced in the liver by hydroxylation of vitamin D 3 (cholecalciferol) by the enzyme vitamin D 25-hydroxylase.