Question

I want to pass a value by reference in C. Are this two functions the same? Which is the difference? Is the same in C++?

void foo1(int * val1, int * val2)

void foo2(int &val1, int &val2)

Thanks,

Answer 1

References are C++ only (not C).

The implementations of the methods will be different, since dereferencing a reference is different from dereferencing a pointer in C++.

e.g.

ref.method();

vs.

ptr->method();

In both cases you’re calling on the original object passed to the method, not a copy.