#include <string>
 
std::string home_directory;
 
std::string BuildPath(const std::string& directory, const std::string& path)
{
  if(home_directory.compare(directory) == 0)
    printf("In home directory\n");
 
  std::string result = directory;
  result += "/";
  result += path;
 
  return result;
}
 
int main(int, char* [])
{
  home_directory = "home";
  printf("Home: '%s'\n", home_directory.c_str());
  auto str = BuildPath("base", "path");
  printf("BuildPath: '%s'\n", str.c_str());
}

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