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The C programming language provides many standard library functions for file input and output. These functions make up the bulk of the C standard library header <stdio.h>. [1] The functionality descends from a "portable I/O package" written by Mike Lesk at Bell Labs in the early 1970s, [2] and officially became part of the Unix operating system ...
In the C++ programming language, input/output library refers to a family of class templates and supporting functions in the C++ Standard Library that implement stream-based input/output capabilities. [ 1][ 2] It is an object-oriented alternative to C's FILE -based streams from the C standard library. [ 3][ 4]
Binary file. A hex dump of the 318 byte Wikipedia favicon, or . The first column numerates the line's starting address, while the * indicates repetition. A binary file is a computer file that is not a text file. [ 1] The term "binary file" is often used as a term meaning "non-text file". [ 2] Many binary file formats contain parts that can be ...
On POSIX systems, the file descriptor for standard input is 0 (zero); the POSIX <unistd.h> definition is STDIN_FILENO; the corresponding C <stdio.h> abstraction is provided via the FILE* stdin global variable. Similarly, the global C++ std::cin variable of type <iostream> provides an abstraction via C++ streams.
Seekg. In the C++ programming language, seekg is a function in the fstream library (part of the standard library) that allows you to seek to an arbitrary position in a file. This function is defined for ifstream class - for ofstream class there's a similar function seekp (this is to avoid conflicts in case of classes that derive both istream ...
In the Sixth Edition source code of the Unix program loader, the exec() function read the executable image from the file system. The first 8 bytes of the file was a header containing the sizes of the program (text) and initialized (global) data areas.
1. 1. 1. The bitwise AND operator is a single ampersand: &. It is just a representation of AND which does its work on the bits of the operands rather than the truth value of the operands. Bitwise binary AND performs logical conjunction (shown in the table above) of the bits in each position of a number in its binary form.
Bit field. A bit field is a data structure that maps to one or more adjacent bits which have been allocated for specific purposes, so that any single bit or group of bits within the structure can be set or inspected. [ 1][ 2] A bit field is most commonly used to represent integral types of known, fixed bit-width, such as single-bit Booleans .