MCQ's type questions. Answer must be in one line but to the point.

JELLIUL 1) Which one is call by reference? a. int funs C&a &b) b. int func(*a, *b) 2) what will be the return type of the int func(float x,float y) a int b. double C. float 3) output of the following class Mathalan public: string == 'Hello', }; int maino { Mathum my: coutcom