/*
 * Compile with the following command:
 *    gcc hello_world.c -o hello
 *
 * There should now be an executable in your directory called "hello" which you
 * should be able to run using ./hello.
 *
 * If you leave off the "-o hello" there will be an executable called "a.out"
 * which you can run the same way.
 *
 * Now try printing numbers and other things!
 * http://www.cplusplus.com/reference/clibrary/cstdio/printf/
 */
#include <stdio.h>

int main () {
  printf ("Hello world!\n");
  return 0;
}