Initial rework

examples/archive/example.cpp

@@ -0,0 +1,11 @@
+#include <iostream>
+#if __cplusplus >= 202302L
+#  define do_print(x) std::print(x)
+#else // Old C++ version.
+#  define do_print(x) std::cout << x << std::endl
+#endif // Check C++ version.
+
+
+extern "C" void print(const char* str) {
+  do_print(str);
+}