With multiple inheritance you might be tempted to say the Pegasus extends Horse and Bird because you've classified the Bird as an animal with wings. However, Birds have other traits that Pegasi don't.

So they cut multiple inheritance from the language (just as they cut operator overloading). The designers’ extensive C++ experience taught them that multiple inheritance just wasn’t worth the ...

Safe C++ Extensions proposal would provide C++ developers with memory-safe implementations of essential data structures and algorithms, along with features that prevent common memory-related errors.