int(foo) and (int) foo(int(x), int(y)) are not legal syntax in C. However, they are in C++ [0], which is my whole point. [0] your method declaration has a smal

int(foo) and (int) foo(int(x), int(y)) are not legal syntax in C. However, they are in C++ [0], which is my whole point. [0] your method declaration has a small problem, it apparently cannot have parenthesis around returned type.