When is a do-while appropriate?

Question

When is a do-while the better choice over other types of loops? What are some common scenarios where its better than others?

I understand the function of a do-while,

Answer 1

No-one's yet mentioned its use in C macros...

#define do_all(x) do{ foo(x); bar(x); baz(x); } while(0)

then in the code you can have

do_all(a);

• the point being that it gets executed exactly once and the semi-colon on the end of the macro call completes the while(0); statement.