摘要：task2.cpp #include <iostream> #include <typeinfo> // definitation of Graph class Graph { public: virtual void draw() { std::cout << "Graph::draw() : j 阅读全文

摘要：vector_int hpp: #include <iostream> using namespace std; class vector_int { public: vector_int(int n); vector_int(int n, int m); vector_int(const vect 阅读全文