Hello world (commented)

hello-detailed.c

// Including the header file stdio.h
#include <stdio.h>

// Defining the main() function
int main()
{                         // main() function opening brace
  
  // To display some text on the screen, we use the printf() function from stdio.h file
  printf(" Hello World! \n");    // The '\n' at the end means new line
  
  // Return 0 to the operating system, which denotes success
  return 0;
  
}                         // main() function opening brace

/* Note how each statement inside the braces has to end with a semicolon. */