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IMPLEMENTATION OF STATIC MEMBERS AND METHODS


#include<iostream.h>
#include<conio.h>
#include<stdlib.h>
class lib
{
static int d_it,d_cse,bk,tot;
public:
   static void it_staff ( int a)
  {
       int t_it;
      cout<<"\n\t Enter the no.of books required:";
      cin>>bk;
          t_it=a;
                    if(bk<t_it)
                 {
         d_it=d_it+bk;
          tot=tot-bk;
          cout<<"\n\t\t Books obtained by IT dept"<<" "<<d_it;
     cout<<"\n\t\t Total Books in library"<<" "<<tot;
               }
      
else
     {
     cout<<"\n\t\t Level exceeded for IT";
    }
}
   static void cse_staff(int a)
  {         
int t_cse;
           cout<<"\n\t Enter the no.of books required:";
                  cin>>bk;
              t_cse=a;
      if(bk<t_cse)
      {
d_cse=d_cse+bk;
tot=tot-bk;
cout<<"\n\t\t Books obtained by CSE dept"<<" "<<d_cse;
cout<<"\n\t\t Total Books in library"<<" "<<tot;
    }
      else
      {
cout<<"\n\t\t Level exceeded for CSE";
      }
    }
static void cse_stud()
{
       cout<<"\n\t Enter the no.of books required:";
       cin>>bk;
       if(bk>0)
     {  
tot=tot-bk;
  cout<<"\n\t\t Books obtained by CSE students"<<" "<<bk;
     cout<<"\n\t\t Total Books in library"<<" "<<tot;
  }
}
static void it_stud()
{
    cout<<"\n\t Enter the no.of books required:";
           cin>>bk;
    if(bk>0)
   {
        tot=tot-bk;
       cout<<"\n\t\t Books obtained by IT students"<<" "<<bk;
       cout<<"\n\t\t Total Books in library"<<" "<<tot;
   }
}
};

int lib::tot=1000;
int lib::d_it=0;
int lib::d_cse=0;
int lib::bk;
 void main()
{
   int ch;
   clrscr();
   lib l;
  cout<<"\t\t\t LIBRARY MANAGEMENT\n\n";
cout<<"1.IT DEPT STAFF\n2.CSE DEPT STAFF\n3.IT DEPT STUDENTS\n4.CSE DEPTSTUDENTS\n5.EXIT";
   do
   {
cout<<"\n Enter the choice displayed above:";
     cin>>ch;
switch(ch)
{
case 1:
           int t_it=300;
           l.it_staff(t_it);break;

case 2:
             int t_cse=200;
          l.cse_staff(t_cse);break;
case 3:
         l.it_stud();break;
case 4:
       l.cse_stud();break;
case 5:
       exit(0);
}
    }while(ch<=4);
   getch();
}
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