In a language that passes parameters by reference, there is a function f(x, y) that does the following: If a is assigned the value 3, and then /(a , a) is called, what is returned? The C function / is...

In a language that passes parameters by reference, there is a function f(x, y) that does the following:

If a is assigned the value 3, and then /(a , a) is called, what is returned?

The C function / is defined by:

 Variable a is a pointer to 6; variable 6 is a pointer to c, and c is an integer currently with value 4. If we call /(c , 6, a), what is returned?