The keyword inline is used as part of a function declaration as a request to the compiler to inline the function body. As such it should be used instead of the old-style #define macros. It is implicit for a member function defined within a class. These typically are short functions where efficiency is paramount. inline bool one_less(int a, int b) { return (a – b == 1);}
Inline functions are normally defined in header files, because
definitions of an inline function must be identical.
Sophisticated use of the keyword inline is to encapsulate code
within a namespace.
See,
http://en.cppreference.com/w/cpp/language/namespace,
C is a programming language designed by Dennis Ritchie of Bell
Laboratories and implemented there on a PDP-11 in 1972. It was
used as the systems implementation language to implement the
UNIX operating system. In 1978, “The C Programming Language”
by Brian Kernighan and Dennis Ritchie was published. This
became the first de facto standard for the language. In 1988 they
published the second edition based on the Draft-proposed ANSI C
standard. This standard was approved in 1989 ( C89). This largely
remains the version of the C programming language that is used by
professional programmers.
The International Standards
Organization (ISO) has also adopted C99 and C2011 with further improvements and extensions to C89.
C++ is a programming language designed by Bjarne Stroustrup of
Bell Laboratories and commercially released in 1985. In 1986,
“The C++ Programming Language” by Bjarne Stroustrup was
published. As with K&R, this book defined the initial de facto
standard. C++ was an object-oriented extension to C that kept
most of the basic C features and semantics.
Indeed its
implementation was as a preprocessor to existing C compilers. Its
key insight was to allow the C struct to encapsulate both data and
functions with added key words for data hiding, and to add
resource handlers called constructors and destructors. In 1998 ,
ISO adopted a first standard. This class emphasizes the IS0 C++11
standard. There is also an ISO C++14 and a scheduled ISO
C++17.
“The C++ Programming Language:4th edition” by Bjarne
Stroustrup is a critical guide to the use of C++11
