What are x and y in the following macro definition?

macro Add x,y
Load y
Mul x
Store y
end macro

An unrestricted use of the "goto" statement is harmful because

Indicate the following statement true or false:

Although C does not support call by name parameter passing, the effect can be correctly simulated in C.

Indicate the following statement true or false :

A programming language not supporting either recursion or pointer type does not need the support of dynamic memory allocation.