HISTORY OF C
C was invented primarily by Brain Kernighan and Dennis Ritchie working at AT&T Bell Labs in the United States. In 1983 the American National Standards Institute began the Standardisation process. In 1989 the International Standards Organization continued the standardisation process. In 1990 a standard was finalized, known simply as “Standard C”. Everything Before this known as “K&R C”.
Standardisation :
C turned out to be very popular and by the early 1980s hundreds of implementations were begin used by a rapidly growing community of programmers. It was time to standardize the language.
ANSI:
In America, the responsibility for standardizing languages is that of the American National Standards Institute or ANSI. The name of the ANSI authorizedcommitte that developed the standard for c was X3j11. The language is now defined by ANSI Standard X3.159-1989.
ISO:
In the International arena, the International Standards Organization, or ISO, is responsible for standardizing computer language. ISO formed the technical committee JTC1/SC22/WG14to review the work of X3J11. Currently the ISO standard for c, ISO 9889:1990, is essentially identical to X3.159. The Standards differ only in format and in the numbering of the sections.
The ISo C Standard is thus the final authority on what constitutes the C programming language. It is referred to from this Point on as Just “The Standard”. What went before, i.e. C as defined by Brian Kernighan and Dennis Ritchie is known as “K &R C”
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#include<stdio.h> void main() { printf("\nFirst Program In C"); } |
#include:
The #include directive instructs the C Preprocessor (a non intractive editor which will be discussed later) to find the text file “stdio.h”. The name itself means “Standard input and output” and the “.h” means it is a header file.
main:
The main function is most important. This defines the point at which your program execution will start.
void:
void represents that function doesn’t return any value.
\n:
\n is new line character (change line).
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