Chapter 01 of 37

Introduction

If you're starting programming for the first time, C is one of the best languages to begin with. It teaches you the basic concepts of programming while also giving you an idea of how a computer works internally.

What is C?

C is a general-purpose, procedural programming language developed by Dennis Ritchie at Bell Labs around 1972.

It was originally developed for system programming and UNIX, but today C is used in many areas such as operating systems, embedded systems, device drivers, compilers, and networking software.

In simple words, C allows us to give instructions to a computer using a structured programming language.

For example:

#include <stdio.h>

int main()
{
    printf("Hello, World!");

    return 0;
}

Output:

Hello, World!

We'll learn what each line means as we move forward.

Why Learn C?

C is still important because it gives you a strong understanding of programming fundamentals.

It helps you learn concepts such as:

  • Variables and data types

  • Conditions and loops

  • Functions

  • Arrays and strings

  • Pointers

  • Memory management

  • Data structures

C also gives you more control over memory and hardware compared with many high-level languages.

Where is C Used?

C is commonly used in:

Area

Examples

Operating Systems

System software and kernels

Embedded Systems

Microcontrollers, IoT devices

Compilers

Language and system tools

Device Drivers

Hardware communication

Networking

High-performance network software

Who Created C?

Information

Details

Developer

Dennis Ritchie

Organization

Bell Labs

Developed

Around 1972

Programming Style

Procedural

Type

General-purpose

Why is C Called a Procedural Language?

In C, we generally solve a problem by dividing it into a sequence of steps or functions.

For example, if we want to calculate the sum of two numbers:

Take two numbers
       ↓
Add them
       ↓
Display the result

C lets us write these steps as instructions that the computer can execute.

C in One Line

C is a fast, powerful, general-purpose programming language that teaches both programming fundamentals and low-level computer concepts.

That's enough for the introduction. Now we can move on to the actual basics of C and start writing programs step by step.