Basic Input/Output

Introduction

Input refers to accepting data while output refers to presenting data. Every program performs three main functions accepting data from user, processing it and producing the output.

In C language there are several input and output functions.

These functions are collectively found in IO.h and such IO function together form a library name stdio.h .

User will require all such library function.

These library functions are classified into three broad categories:

1. Console I/O functions

2. Disc I/O functions

3. Port I/O functions