Question

In Lua, you can do this:

foo = a and b or c and d or e

Which is equivalent to (at least I am pretty sure it is equivalent to):

local foo = nil
if a then
foo = b
elseif c then
foo = d
else
foo = e
end

Is there anything equivalent or similar to this in C++?

Answer 1

There’s the ternary operator. It has funny precedence, so it’s good practice to always parenthesize it.

bool foo = ( a ? b : ( c ? d : e ) )

Note that this only works if b, d, and e can reduce to the same type. If a is a double, d is a float and e is an int, your result will always be cast to a double.