Consider the following function:void reverse(char * string1, const char * string2){int stringsize = sizeof(string1)/sizeof(char);*(stri ng1 + stringsize - 1) = '\0';string1 = string1 + stringsize - 2;for (; *string2 != '\0'; --string1, ++string2) {*string1 = *string2;}}What method does the function use to refer to array elements?