This C program prints "Hello world" to demonstrate a simple program. It includes the standard input/output library and uses the printf function to display the message. The purpose of a hello world program is to greet users of an application.

1. Hello world in C language
//C hello world example
#include <stdio.h>
int main()
{
printf("Hello worldn");
return 0;
}
Purpose of Hello world program may be to say hello to people or the users of your
software or application.
Output of program: