c2.cpp

void del_substr(char *str, const char *substr) {
	char *c1, *c2;
	while (*str++!=0) {
		for (c1 = str, c2 = (char*)substr; *c1 == *c2 && *c1 && *c2; c1++, c2++);
		if (*c2 == 0)
			for (c2 = str; *c2++ = *c1++; );
	}
}