Introduction of C
The ‘ C ’
programming language was originally developed for and implemented on the UNIX
operating system, on a DECPOP-11 by
Dennis Ritchie. one of the best feature of ‘ C ’ is that it is not tied to any
particular hardware or system. this makes
easy for awrite program that will run without any changes on all machine
practically.’ C ‘ is often called a middle level language as it combines the
element of the high level language with the functionalism of assembly language.
Q)What is C?
C is a general-purpose programming language used for wide range
of applications from Operating systems like Windows and iOS to software that is
used for creating 3D movies.
C programming is highly efficient. That’s the main reason why
it’s very popular despite being more than 40 years old.
Standard C programs are portable. The source code written in one
system works in another operating system without any change.
As mentioned, it’s a good language to start learning
programming. If you know C programming, you will not just understand how your
program works, but will also be able to create a mental picture on how a
computer works.
Q)Why should we use C language?
· A procedural language=In procedural
languages like C, a list of predefined instructions are carried out step by
step. A typical C program may contain one or more procedures (functions) to
perform a task.
· C programs are fast = C language
trusts programmers and allows direct manipulation of the computer hardware.
This is not possible in most high-level programming languages. It’s one of the
reasons why C is considered good choice to start learning programming.
· Standard C programs are portable = “Write
once, compile everywhere”. Well-written standard C programs are portable,
meaning, programs written in one system (e.g. Windows 7) can be compiled in
another system(e.g. Mac OS) without any change.
· Use of Modularity = You can store
sections of C code in the form of libraries for future use. This concept is
known as modularity.
· C itself can do very little on its
own. The power of C language comes from its libraries. C comes with standard
libraries to solve common problems. Suppose, you need to display something on
the screen, you can include “stdio.h” library that allows you to use printf()
function.
· Statically typed language = C is a
statically typed language. This means that the type of a variable is checked
during the compile time but not in the run-time. This helps in detection of
errors during the software development cycle. Also, the statically typed
languages are faster than dynamically typed language in general.
· General purpose.
· Despite being old, C is used in
variety of applications from system programming to photo editing softwares.
Some of the applications where C programming is used are as follows:
· Embedded Systems
· Operating System - Windows, Linux,
OSX, Android, iOS
· Databases - PostgreSQL, Oracle,
MySQL, MS SQL Server
· Other Uses - Network drivers,
Compilers, Print spoolers.
Where is C used? Key
Applications
1) 'C' language is widely used in embedded systems.
2) It is used for developing system applications.
3) It is widely used for developing desktop applications.
4) Most of the applications by Adobe are developed using 'C'
programming language.
5) It is used for developing browsers and their extensions. Google's
Chromium is built using 'C' programming language.
6) It is used to develop databases. MySQL is the most popular
database software which is built using 'C'.
7) It is used in developing an operating system. Operating
systems such as Apple's OS X, Microsoft's Windows, and Symbian are developed
using 'C' language. It is used for developing desktop as well as mobile phone's
operating system.
8) It is used for compiler production.
9) It is widely used in IOT applications.
C "Hello, World!" Program
A simple C program to display "Hello, World!" on the screen. Since, it's a very simple program, it is often used to illustrate the syntax of a programming language.
#include <stdio.h>
int main()
{
// printf() displays the string inside quotation
printf("Hello, World!");
return 0;
}
---------end---------------
To be continue...
