ANSI C - meaning and definition. What is ANSI C
Diclib.com
Online Dictionary

What (who) is ANSI C - definition

VERSION OF THE C PROGRAMMING LANGUAGE STANDARD
ISO 9899; ANSI C standard; Standard C; Standard C programming language; ISO C; ISO/IEC 9899; X3J11; ISO C90; C89 (C version); C90 (C version); Ansi C; Ansi c; C95 (C version); Ansic; C85 (C version); C88 (C version); C86 (C version)

ANSI C         
<language, standard> (American National Standards Institute C) A revision of C, adding function prototypes, {structure passing}, structure assignment and standardised library functions. ANSI X3.159-1989. cgram is a grammar for ANSI C, written in Scheme. unproto is a program for removing function prototypes to translate ANSI C to standard C. lcc is a retargetable compiler for ANSI C. (1995-11-26)
ANSI C         
ANSI C, ISO C, and Standard C are successive standards for the C programming language published by the American National Standards Institute (ANSI) and ISO/IEC JTC 1/SC 22/WG 14 of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). Historically, the names referred specifically to the original and best-supported version of the standard (known as C89 or C90).
ISO C         

Wikipedia

ANSI C

ANSI C, ISO C, and Standard C are successive standards for the C programming language published by the American National Standards Institute (ANSI) and ISO/IEC JTC 1/SC 22/WG 14 of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). Historically, the names referred specifically to the original and best-supported version of the standard (known as C89 or C90). Software developers writing in C are encouraged to conform to the standards, as doing so helps portability between compilers.