附录：源程序清单 #include<iostream> #include<cstring> #include<windows.h> using namespace std;

//时间类

class time {public:

time(int y=0,int m=0,int d=0) {year=y;month=m;day=d;} ~time(){} protected: }; //信息类

class xinxi:public time { public:

xinxi(){ tiaoshu++;} ~xinxi(){tiaoshu--;}

void setname(char *n){strcpy(name,n);}

void settime(int y,int m,int d){year=y;month=m;day=d;} void setqklx(char *qk){strcpy(queke,qk);} void setjieci(char *jc){strcpy(jieci,jc);} int year,month,day;