foo.cc:4:12: error: expected initializer before ‘replaceName’
    4 | int string replaceName(const string& story,const string& oldName, const string& newName) {
      |            ^~~~~~~~~~~
foo.cc: In function ‘int main()’:
foo.cc:20:28: error: ‘replaceName’ was not declared in this scope
   20 |     std::string newStory = replaceName(story, oldName, newName);
      |                            ^~~~~~~~~~~