What is the safe way to fill multidimensional array using std::fill?

Question

Here is what I am using:

class something
{
   char flags[26][80];
} a;

std::fill(&a.flags[0][0], &a.flags[0][0] + 26 * 80, 0);

(Upda

Answer 1

char flags[26][80];
std::fill((char*)flags, (char*)flags + sizeof(flags)/sizeof(char), 0);