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  2. Absolute zero - Wikipedia

    en.wikipedia.org/wiki/Absolute_zero

    At temperatures near 0 K (−273.15 °C; −459.67 °F), nearly all molecular motion ceases and ΔS = 0 for any adiabatic process, where S is the entropy.In such a circumstance, pure substances can (ideally) form perfect crystals with no structural imperfections as T → 0.

  3. C data types - Wikipedia

    en.wikipedia.org/wiki/C_data_types

    The C language provides the four basic arithmetic type specifiers char, int, float and double (as well as the boolean type bool), and the modifiers signed, unsigned, short, and long. The following table lists the permissible combinations in specifying a large set of storage size-specific declarations.

  4. 0 - Wikipedia

    en.wikipedia.org/wiki/0

    0 (zero) is a number representing an empty quantity.Adding (or subtracting) 0 to any number leaves that number unchanged; in mathematical terminology, 0 is the additive identity of the integers, rational numbers, real numbers, and complex numbers, as well as other algebraic structures.

  5. Null character - Wikipedia

    en.wikipedia.org/wiki/Null_character

    In many languages (such as C, which introduced this notation), this is not a separate escape sequence, but an octal escape sequence with a single octal digit 0; as a consequence, \0 must not be followed by any of the digits 0 through 7; otherwise it is interpreted as the start of a longer octal escape sequence. [9]

  6. Binary code - Wikipedia

    en.wikipedia.org/wiki/Binary_code

    The two-symbol system used is often "0" and "1" from the binary number system. The binary code assigns a pattern of binary digits, also known as bits , to each character, instruction, etc. For example, a binary string of eight bits (which is also called a byte) can represent any of 256 possible values and can, therefore, represent a wide ...

  7. Operators in C and C++ - Wikipedia

    en.wikipedia.org/wiki/Operators_in_C_and_C++

    This is a list of operators in the C and C++ programming languages.. All listed operators are in C++ and lacking indication otherwise, in C as well. Some tables include a "In C" column that indicates whether an operator is also in C. Note that C does not support operator overloading.

  8. Escape sequences in C - Wikipedia

    en.wikipedia.org/wiki/Escape_sequences_in_C

    The escape sequence \0 is a commonly used octal escape sequence, ... Since the C99 standard, C supports escape sequences that denote Unicode code points, ...

  9. Magic number (programming) - Wikipedia

    en.wikipedia.org/wiki/Magic_number_(programming)

    In C and C++, 0 represents the null pointer. As with Boolean values, the C standard library includes a macro definition NULL whose use is encouraged. Other languages provide a specific null or nil value and when this is the case no alternative should be used. The typed pointer constant nullptr has been introduced with C++11.