material informatics

K & R C

In 1978, Dennis Ritchie and Brian Kernighan published the first edition of a book called The C Programming Language. This book is up to now recognized as a holy book and the C language is the main reference a programmer who wants to know about the C language, mainly because it's so full scope of this book about the C language and easy program that exemplified in this book.

C language version shown in this book came to be known in circles as a C programmer K & R. In the book The C Programming Language second edition and covers ANSI C that was introduced later.

ANSI C and ISO C

In its development, came the other C versions that ultimately create confusion among programmers. Therefore, in 1983, American National Standards Institute (ANSI) set up a committee to create a standard version of the C language After going through a long and fierce, in 1989, has successfully passed the so-called ANSI standard X3.159-1989, this version is often called ANSI C, or sometimes C89.

In 1990, the ANSI C version was adopted by the Organization for Standardization (ISO) with little change in the name of ISO / IEC 9899:1990. This version is often called the ISO C or C90. Because the version of the ANSI C and ISO C only has a few differences, the call to C90 and C89 refer to the same language.


C99

C99 version was made by the ISO C in 1999. This version is intended primarily to increase the support for object-oriented programming, especially after a C + +, which is based on this language have a special place among programmers