C++ Program to implement Virtual Class by using Multipath Inheritance

Issue the books to various members of library.
– Member-Membername, Age, Address
– Faculty (derived from member classs)- Department and integer type array for issuing books with upperlimit 10.
– Student (derived from member class)- Class, Rollno and integer type array for issuing books with upperlimit 4.
Daily Transaction (derived from Faculty and Student classes)- date of issue, date of return (calculated from date of issue as 15 days for students and 45 days for a faculty).

#include
#include
#include
#include
#include

class CDATE{
    private:
        int dd;
        int mm;
        int yy;
    public:
        struct date d;
        CDATE(){
            getdate(&d);
            dd = d.da_day;
            mm = d.da_mon;
            yy = d.da_year;
            }
        CDATE(int d, int m, int y){
            dd = d;
            mm = m;
            yy = y;
            }
    };

class CMember{
    protected:
        char m_name[20], m_add[30];
        int m_age;
    public:
        CMember(){}
        CMember(char *Mnam, char *Madd, int Mage){
            strcpy(m_name, Mnam);
            strcpy(m_add, Madd);
            m_age = Mage;
            }
    };

class CFaculty : public virtual CMember{
    protected:
        char f_dept[20];
        int f_bk_issue;
    public:
        CFaculty(){}
        CFaculty(char *Fdept, int Fiss){
            strcpy(f_dept, Fdept);
            f_bk_issue = Fiss;
            }
    };

class CStudent : public virtual CMember{
    protected:
        char s_clas[10];
        int s_roll, s_bk_issue;
    public:
        CStudent(){}
        CStudent(char *Sclas, int Sroll, int Siss){
            strcpy(s_clas, Sclas);
            s_roll = Sroll;
            s_bk_issue = Siss;
            }
    };

class CTrans: public CFaculty , public CStudent{
    private:
        CDATE dt;
        int dayStu;
        int dayFac;
        char bk_name[20];
    public:
        CTrans(){
            dayStu = 15;
            dayFac = 45;
            }
        CTrans(char *Tnam, char *Tadd, int Tage, char *Tdept,
              int Tiss, char *Tbk_nam, CDATE Tdoi)
        : CMember(Tnam, Tadd, Tage), CFaculty(Tdept, Tiss){
            strcpy(bk_name, Tbk_nam);
            dt = Tdoi;
            }
        CTrans(char *Tnam, char *Tadd, int Tage, char *Tclas,
              int Troll, int Tiss, char *Tbk_nam, CDATE Tdoi)
        : CMember(Tnam, Tadd, Tage), CStudent(Tclas, Troll,
Tiss){
            strcpy(bk_name, Tbk_nam);
            dt = Tdoi;
            }
        void Fac_Show(){
            cout<<"\n Faculty Details";
            cout<<"\n Name: "<            cout<<"\n Address: "<            cout<<"\n Age: "<            cout<<"\n Department: "<            cout<<"\n Total Books to Issue: "<            cout<<"\n Book name: "<            }
        void Stu_Show(){
            cout<<"\n Student Details";
            cout<<"\n Name: "<            cout<<"\n Address: "<            cout<<"\n Age: "<            cout<<"\n Class: "<            cout<<"\n Total Books to Issue: "<            cout<<"\n Book name: "<            }
    };

void main(){
    int ch;
    char book_name[20];
    CTrans ObjLib;
    while(1){
        clrscr();
        cout<<"\n LIBRARY MANAGEMANT";
        cout<<"\n ~~~~~~~~~~~~~~~~~~";
        cout<<"\n 1 -> Issue Books to Faculty.";
        cout<<"\n 2 -> Issue Books to Student.";
        cout<<"\n 3 -> Show Details of Faculty.";
        cout<<"\n 4 -> Show Details of Student.";
        cout<<"\n 5 -> EXIT.";
        cout<<"\n Enter your choice: ";
        cin>>ch;
        switch(ch){
            case 1:
                cout<<"\n Enter Book Name: ";
                cin>>book_name;
                CDATE dt1(5, 10, 2004);
                CTrans Olib1("Manoj", "Dwarka", 23,
"Computer", 15, book_name, dt1);
                break;
            case 2:
                cout<<"\n Enter Book Name: ";
                cin>>book_name;
                CDATE dt2(5, 10,2004);
                CTrans Olib2("Nitin", "Dwarka", 24, "MCA",
   214, 5, book_name, dt2);
                break;

            case 3:
                ObjLib.Fac_Show();
                break;
            case 4:
                ObjLib.Stu_Show();
                break;
            default:
                exit(1);
            } // end of switch.
        getch();
        } // end of while.
    } // end of main.


Output:

LIBRARY MANAGEMANT: –
~~~~~~~~~~~~~~~
1 -> Issue Books to Faculty.
2 -> Issue Books to Student.
3 -> Show Details of Faculty.
4 -> Show Details of Student.
5 -> EXIT.
Enter your choice: 2

Name: Manoj
Address: Dwarka
Age: 23
Course: MCA
Enter Book Name: c plus plus



LIBRARY MANAGEMANT: –
~~~~~~~~~~~~~~~
1 -> Issue Books to Faculty.
2 -> Issue Books to Student.
3 -> Show Details of Faculty.
4 -> Show Details of Student.
5 -> EXIT.
Enter your choice: 4

Student Details: –
Name: Manoj
Address: Dwarka
Age: 23
Course: MCA
Total Books to Issue: 4
Book name: CPP