First C program prints hello world, printf function is used to display text on screen, '\n' places cursor on the beginning of next line, all function detail included in the "stdio.h" header file as a printf and int, And getch function details include in "conio.h" header file. This may be your first c code while learning programming.
C Programming Code
#include<stdio.h>
#include<conio.h>
C Programming Code
#include<stdio.h>
#include<conio.h>