Recursive Character Search and Destroy

I receive a string, and I want to remove any 'a', 'b' and 'c' characters, in a recursive way.

How do I do this in C and Java?

Thanks

void removeChar(char *s, char c) {
    char *to = s, *from = s;
    for (; *from; from++)
        if (*from != c)
            *to++ = *from;
    *to = 0;
}