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Storage classes in C. Add languages. Add links. ... Download as PDF; Printable version; In other projects Appearance. move to sidebar hide. From Wikipedia, the free ...
In the C programming language, register is a reserved word (or keyword), type modifier, storage class, and hint. The register keyword was deprecated in C++, until it became reserved and unused in C++17. It suggests that the compiler stores a declared variable in a CPU register (or some other faster location) instead of in random-access memory.
[1] The storage-class specifier auto can be added to these variable declarations as well, but as they are all automatic by default, this is entirely redundant and rarely done. In C, using the storage class register is a hint to the compiler to cache the variable in a processor register.
In the predecessors of C, including BCPL and B, there was already a concept of static storage., [1] [2] which meant a storage which is always in existence. However, In B, there wasn't a static keyword, but there was an extrn keyword to specify external storage (external to all functions and must be defined outside a function), which is always static, in contrast with auto keyword, which ...
A snippet of C code which prints "Hello, World!". The syntax of the C programming language is the set of rules governing writing of software in C. It is designed to allow for programs that are extremely terse, have a close relationship with the resulting object code, and yet provide relatively high-level data abstraction.
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English: Printable pdf version of C Programming Wikibook. This file was created with MediaWiki to LaTeX . The LaTeX source code is attached to the PDF file (see imprint).
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