Hello World in C - Language

So dear ones Time to jump into the wonderland of C-Language, Going to describe you the very First Program in C - Language, that is must to enter otherwise there is no program in C - Language at all.

#include<stdio.h>

#include<conio.h>

void main(void)

{

clrscr();

pritnf("Hello World");

getch();

}

Here is the details about above mentioned program

Header Files

Remember one thing that all functionality of C - Language is stored inside some special Files called Header Files. Header Files have extension .h and are stored in include folder inside TC Folder when you install C Compiler.

Preprocessor Directives

# sign indicates the preprocessor directive, we have two preprocessor directives in C - Lanugage

• include 
• define

Include is used to add Header Files functionality in your program, and define is used to define Constants in C - Language

every C Program must start with preprocessor directive statements.

Main Function

Every Language starts its program from somewhere, so is the C Language, C Language Starts its Program from main function, the whole program is controlled from main function

Function Body

{ } Braces define the body of the function

inside the Body of the function we write our statements, 

clrscr() ; 

this statement clears the output screen

printf();

this statement writes the text given in double quotes on output screen

getch();

this statement is used to pause of output screen, it stays there until user presses any key from keyboard.

Role of Semicolon.

Semicolon is called statement terminator, so every C Language statement must end at Semicolon.