// declare base_func; mark it as a load-time imported symbol
__declspec(dllimport) void base_func(void);

// declare plugin_func; mark it as an exported symbol
__declspec(dllexport) void plugin_func(void);

// define plugin_func
#include <stdio.h>
__declspec(dllexport) void
plugin_func(void){
  printf("provided by plugin: {\n");
  printf(" ");
  base_func();
  printf(" ");
  base_func();
  printf("}\n");
}