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Bjarne Stroustrup, the creator of C++, wrote the first version of the stream I/O library in 1984, as a type-safe and extensible alternative to C's I/O library. [5] The library has undergone a number of enhancements since this early version, including the introduction of manipulators to control formatting, and templatization to allow its use with character types other than char.
Provides std::istream and other supporting classes for input. <ostream> Provides std::ostream and other supporting classes for output. <print> Added in C++23. Provides formatted output utilities such as std::print supported for both C and C++ streams. <spanstream> Added in C++23. Provides std::spanstream and other fixed character buffer I/O ...
C++23, formally ISO/IEC 14882:2024 [1], is the current open standard for the C++ programming language that follows C++20.The final draft of this version is N4950. [2] [3]In February 2020, at the final meeting for C++20 in Prague, an overall plan for C++23 was adopted: [4] [5] planned features for C++23 were library support for coroutines, a modular standard library, executors, and networking.
The number after the \u is a hexadecimal number; it does not need the usual 0x prefix. The identifier \u represents a 16-bit Unicode code point; to enter a 32-bit code point, use \U and a 32-bit hexadecimal number. Only valid Unicode code points can be entered.
Also, the decimal point is not included on whole numbers. x, X: unsigned int as a hexadecimal number. x uses lower-case letters and X uses upper-case. o: unsigned int in octal. s: null-terminated string. c: char (character). p: void* (pointer to void) in an implementation-defined format. a, A: double in hexadecimal notation, starting with 0x or 0X.
Standard output is a stream to which a program writes its output data. The program requests data transfer with the write operation. Not all programs generate output.
Intel hexadecimal object file format, Intel hex format or Intellec Hex is a file format that conveys binary information in ASCII text form, [10] making it possible to store on non-binary media such as paper tape, punch cards, etc., to display on text terminals or be printed on line-oriented printers. [11]
Count the number of bits that are set to 1 in its source argument. 3 K10, Nehalem, Nano 3000: POPCNT r64,r/m64: F3 REX.W 0F B8 /r: SSE4.2 (non-SIMD) CRC32 r32,r/m8: F2 0F 38 F0 /r: Accumulate CRC value using the CRC-32C (Castagnoli) polynomial 0x11EDC6F41 (normal form 0x1EDC6F41). This is the polynomial used in iSCSI.