Hello World program in c

 

Hello World Program

In c language , for writting hello world program , we need to add header files like as -

• #include<conio.h>
• #include<stdio.h>

After using header file we need to define main function like that-

• void main()
• int main()
• int main(void)

Gernally we use void main() or int main() function, after this we use a predefine function clrscr.

• clrscr(); - clrscr is a pre-define function for complier screen clear .

Now, we need to print massage , for this we will use a pre-define function that is printf 

• printf(); - printf is a pre-define function that is use for any massage print for show , user.

after this we need one more pre define function that is getch .

• getch(); - it is also a pre define function , it use for compiler window screen hold .

  Now , We will write program --------

1. #include<conio.h>
2. #include<stdio.h>
3. void main()
4. { 
5.      clrscr();
6.      printf("Hello World");
7.      getch();
8. }

   Program Pic..

Output pic..