Free((char *)st);
}
+int sk_num(STACK *st)
+{
+ if(st == NULL) return -1;
+ return st->num;
+}
+
+char *sk_value(STACK *st, int i)
+{
+ if(st == NULL) return NULL;
+ return st->data[i];
+}
+
+char *sk_set(STACK *st, int i, char *value)
+{
+ if(st == NULL) return NULL;
+ return (st->data[i] = value);
+}