#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char* argv[]) {
    char* s = "Yes";
    const char *s_copy = s;            // *s_copy is read-only
                                       // Cannot modify the characters.

    char * const * a_s_copy = &s_copy; // **a_s_copy is not read-only
    // This removes protection.  You CAN modify bytes.

    //  initialization of ‘char * const*’ from incompatible ADDRESS
    //  type ‘const char **’ [-Wincompatible-pointer-types]

    size_t s_len = strlen(s_copy);
    printf("strlen(\"%s\") == %zd\n", s, s_len);

    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */