#pragma once
#include <stdio.h> // Standard I/O header is needed here because printf is used within this header-only function.

#if defined(__cplusplus)
extern "C" {
#endif

// Declared as static to prevent multiple definition errors.
// Since this is a header-only function, it will be included and compiled
// into every translation unit that includes lib3.h. 'static' limits its
// linkage to the current translation unit, preventing linker conflicts.
static void lib3_function()
{
  printf("This is a function from Header-Only Library 3.\n");
}

#if defined(__cplusplus)
}
#endif