Lesson 01·C Programming

Introduction to C

Learn Basic of C Programming language

What is C Language?

C Language is a general purpose and structured programming language developed by 'Dennis Ritchie' at AT & T's Bell Laboratories in 1972 in USA. It is also called as 'Procedure oriented programming language.'

Features of C Language

The C language has following numerous features as:

Easy to Learn
Structure Oriented
It produces Efficient programs
It can handle low-level activities
It can be compiled on a variety of computers

Facts about C

Key historical milestones and facts:

C was invented to write an operating system called UNIX.
C is a successor of B language which was introduced around 1970.
The language was formalized in 1988 by the American National Standard Institute (ANSI).
By 1973 UNIX OS almost totally written in C.
Today C is the most widely used System Programming Language.
Most of the state of the art software have been implemented using C.

Execution of Program

The general process of writing and running a C program:

Create a Program

Write source code in editor (.c file)

Compile Program

Compiler converts source to object code

Link Program to a Library

Linker combines object code with libraries (.exe)

Execute Program

Binary executed by operating system

1. Create a program:

Any Editor like Notepad, VS Code, etc. to create a C program. This file should be saved with '.c' extension only.

2. Compile program:

The next step is to compile the program. The code is compiled by using compiler converts executable code to binary code i.e. Object code.

3. Link program to a Library:

The object code linked to library that are needed for execution. The link is used to link the program with libraries. It creates a file with '.exe' extension.

4. Execution of Program:

The final executable file is then run by DOS command prompt or by any other software.

Next · Lesson 02

Structure of Program