What is the purpose of the unary plus (+) operator in C?

Question

In C, it\'s legal to write something like:

int foo = +4;

However, as far as I can tell, the unary plus (+) in +4

Answer 1

By 'no-op', do you mean the assembly instruction?
If so, then definitely not.

+4 is just 4 - the compiler won't add any further instructions.