摘要:
1.验证性实验 #include <iostream> #include <fstream> #include <string> #include <cstdlib> using namespace std; int main() { string filename1, filename2, new 阅读全文
摘要:
#include #include using namespace std; class MachinePets{ public: MachinePets(string s):name(s){ }; virtual string talk(){ }; string name; }; class PetCats:public MachinePet... 阅读全文