title: Display a Variable in MessageBoxW c++
body: <p>I have a proplem , like :</p>
  
  <p>Ex : 
      MessageBoxW(0,L"Đây là ABC (This is ABC)",L"Lỗi (Error)",0);</p>
  
  <p>All ok !
  But i want to replace ABC to variable , like it :
      char buff[500];
      char author[] = "ABC";
      sprintf_s(buff,"Đây là %s (This is %s)",author);
      MessageBoxW(0, WHAT WILL BE HERE,L"Lỗi (Error)",0);</p>
  
  <p>I hope someone may help !</p>