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6. Functions
Instructions are grouped into functions. Functions factorize processing and thus combat redundancy. Functions are named and typed. A function specifies the type of arguments it expects and the type of result it returns. A special type exists, called void (no value of this type exists), to signify that a function returns no result (called a procedure in Pascal).
A new special instruction, called return, can be used not only to impose the result of a function, but also to interrupt the invocation of the function and cause it to return the result immediately. The count_lines function, given above as an example, illustrates the use of a return within an endless loop.
The body of a function is a block which, like any other block, can contain variables local to that block. Variables (also known as parameters) of a function have the body of the...
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Functions
Bibliography
References
- (1) - KERNIGHAN (B.W.), RITCHIE (D.M.) - The C Programming Language. - Prentice-Hall (1978).
- (2) - HARBISON (S.P.), STEELE (G.L.) - C : A Reference Manual. - Prentice-Hall (1991).
Works
Websites
Historic site http://www.lysator.liu.se/c/index.html
EiC: The embeddable/extensible interactive, pointer-safe, bytecode C interpreter/compiler
Frequently asked questions http://www.eskimo.com/~scs/C-faq/top.html
...Standards
ISO C standards group http://www.dkuug.dk/JTC1/SC22/WG14/
ISO/IEC 9899: 1990 Programming language - C
ISO/IEC 9899: 1999 Programming language - C
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