What are some better ways to avoid the do-while(0); hack in C++?

It is considered acceptable practice to isolate these decisions in a function and use returns instead of breaks. While all these checks correspond to the same level of abstraction as of the function, it is quite logical approach.

For example:

void foo(...)
{
   if (!condition)
   {
      return;
   }
   ...
   if (!other condition)
   {
      return;
   }
   ...
   if (!another condition)
   {
      return;
   }
   ... 
   if (!yet another condition)
   {
      return;
   }
   ...
   // Some unconditional stuff       
}