C hello world program

Hello world in C language

//C hello world example
#include <stdio.h>
 
int main()
{
  printf("Hello world\n");
  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:

Download Hello world program.

Hello world program in c

We may store "hello world" in a character array as a string constant and then print it.

#include <stdio.h>
 
int main()
{
  char string[] = "Hello World";
 
  printf("%s\n", string);
 
  return 0;
}

Don't worry if you didn't understand above code as you may not be familiar with arrays yet.

Printing hello world indefinitely

Using loop we can print "Hello World" a desired number of time or indefinitely.

#include <stdio.h>
#define TRUE 1
 
int main()
{
  while (TRUE)
  {
    printf("Hello World\n");
  }
 
  return 0;
}

While loop will execute forever until it is terminated, to terminate press (Ctrl + C) in windows operating system.