Adding const keyword to an array passed as a parameter to function

Question

Is there any way that I can add const keyword to an array passed as a parameter to function:

void foo(char arr_arg[])

If I place <

Answer 1

For C++, Mooing Duck's answer using the template is the most straight forward.

If you have C code that is calling a C interface implemented in C++, you are stuck with converting the argument into a pointer argument instead, and making that const

If you were to use Boost's array instead of using C arrays directly, then you would be able to make that const, although it would also be a template function:

template 
void foo (Boost::array const & arg) {}

The advantage of Boost::array is that it gives you the ability to do a light weight allocation of an array off the stack, but be able to fully use STL algorithms that depend upon traits in the container.