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C Programming Basics

C PROGRAMMING BASICS:
1. Introduction to C language: C language was invented in Bell Labs by Dennis Ritchie between 1972-73. C language is a case sensitive language i.e the input given to it varies according to upper and lower case letters. It is executed using binary form data such as (0,1). By using binary data the speed of executing a code increases.
1.1 Header Files:

Header files are those files which contain some predefined functions in it which we are going to use in our code. Every header file is accessed by appending an extension ".h".
Example: #include<stdio.h> ↓                   ⇡
         Tells computer to                  header file with 
         include the header                 extension .h
         file          
There are many header files for different functions such as the following: <conio.h><math.h><string.h>Etc.

1.2 Starting of code and basic Syntax:

void main() or int main()

This tells the computer from where the code is starting. It is wri…