Write a program to print hello world on screen in c language

#include <stdio.h> // header file whicj contain printf(); funcion.

#include <conio.h> // header file which contain getch() funcion
int main() // start body of program.
{
       printf("Hello World! This is my first program in C.");  //prompt
       getch(); //function which is mostly use to hold screen while you typing a charachtar on screen
}