How to study C language programming

C is a structured programming language developed by Dennis Ritchie in 1973 at Bell Laboratories.
It is one of the most popular computer languages today because of its structure, high-level abstraction, machine independent feature etc..
C language has evolved from three different structured language ALGOL, BCPL and B Language.
It uses many concepts from these languages while introduced many new concepts such as datatypes, struct, pointer etc.
In 1988, the language was formalised by American National Standard Institute(ANSI).
In 1990, a version of C language was approved by the International Standard Organisation(ISO) and that version of C is also referred to as C89.
The idea behind creating C language was to create an easy language which requires a simple compiler and enables programmers to efficiently interact with the machine/system, just like machine instructions.

Applications of C language

Mainly C Language is used for Develop Desktop application and system software. Some application of C language are given below.

Used to develop softwares that control embedded systems. Examples of some embedded systems are washing machine, microwave oven, etc.
For creating computer applications.
UNIX operating system is developed in C language.
C programming language can be used to design the system software like operating system and Compiler.
For Creating Compilers of different Languages which can take input from other language and convert it into lower level machine dependent language.
C programming language can be used to design Network Devices.
To evaluate any kind of mathematical equation use c language.