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- #include<iostream.h>
- #include<conio.h>
- #include<string.h>
- #include<stdlib.h>
- #define MAXPATIENTS 100
- struct patient
- {
- char firstname[50];
- char lastname[50];
- char id[20];
- };
- class queue
- {
- public:
- queue(void);
- int addpatientatend(patient p);
- int addpatientatbeginning(patient p);
- patient getnextpatient(void);
- int removedeadpatient(patient*p);
- void outputlist(void);
- char departmentname[50];
- private:
- int numberofpatients;
- patient list[MAXPATIENTS];
- };
- queue::queue()
- {
- numberofpatients=0;
- }
- int queue::addpatientatend(patient p)
- {
- if(numberofpatients>=MAXPATIENTS)
- {
- return 0;
- }
- else
- list[numberofpatients]=p; numberofpatients++;
- return 1;
- }
- int queue::addpatientatbeginning(patient p)
- {
- int i;
- if(numberofpatients>=MAXPATIENTS)
- {
- return 0;
- }
- for(i=numberofpatients-1;i>=0;i--)
- {
- list[i+1]=list[i];
- }
- list[0]=p;numberofpatients++;
- return 1;
- }
- patient queue::getnextpatient(void)
- {
- int i; patient p;
- if(numberofpatients==0)
- {
- strcpy(p.ID,"");
- return p;
- }
- p=list[0];
- Numberofpatient--;
- for(i=0;i<numberofpatients;i++)
- {
- list[i]=list[i+1];
- }
- return p;
- }
- int queue::removedeadpatient(patient*p)
- (
- //returns 1 if successful,0 if patient not found
- int i,j,found=0;
- for(i=0;i<numberofpatient;++)
- {
- if(stricmp(list[i].ID,p->ID)==0)
- {
- *p=list[i];found=1;
- numberofpatient--;
- for(j=i;j<numberofpatients:j++)
- {
- list[j]=list[j+1];
- }
- }
- }
- return found;
- }
- void queue::outputlist(void)
- {
- int i;
- if(numberofpatients==0)
- {
- cout<<"queue is empty";
- }
- else
- {
- for(i=0;i<numberofpatients;i++)
- {
- cout<<" "<<list[i].firstname;
- cout<<" "<<list[i].lastname;
- cout<<" "<<list[i].ID;
- }
- }
- }
- patient inputpatient(void)
- {
- patient p;
- cout<<"please enter data for new patient first name:";
- cin.getline(p.firstname,sizeof(p.firstname));
- cout<<"last name:";
- cin.getline(p.ID,sizeof(p.lastname));
- cout<<"social security number:";
- cin.getline(p.ID,sizeof(p.ID));
- if(p.firstname[0]==0||p.lastname[0]==0||p.ID[0]==0)
- {
- strcpy(p.ID,"");
- cout<<"error:data not valid.operation cancelled.";
- getch();
- }
- return p;
- }
- void outputpatient(patient*p)
- {
- if(p==null||p->ID[0]==0)
- {
- cout<<"no patient";
- return;
- }
- else
- cout<<"patient data:";
- cout<<"first name:"<<p->firstname;
- cout<<"last name:"<<p->lastname;
- cout<<"social security number:"<<p->ID;
- }
- int readnumber()
- {
- char buffer[20];
- cin.getline(buffer,sizeof(buffer));
- return atoi(buffer);
- }
- void departmentmenu(queue*q)
- {
- department
- int choice=0;success;patient p;
- while(choice!=6)
- {
- clrscr();
- cout<<"welcome to department:"<<q->departmentname;
- cout<<"please enter your choice:";
- cout<<"1: add normal patient";
- cout<<"2: add critically ill patient";
- cout<<"3: take out patient for operation";
- cout<<"4: remove dead patient from queue ";
- cout<<"5: list queue ";
- cout<<"6: change department or exit";
- choice=readnumber();
- switch(choice)
- {
- case1://add normal patient
- p=inputpatient();
- if(p.ID[0])
- {
- sucess=q->addpatientat end(p);
- clrscr();
- if(success)
- {
- cout<<"patient added:";
- }
- else \{
- cout<<"errr :the queue is full.cannot add patient:";
- }
- outputpatient(&p);
- cout<<"press any key";
- getch();
- }
- break;
- case2: //add critically ill patient
- p=inputpatient();
- if(p.ID[0])
- {
- success=q->addpatientat beginning(p);
- clrscr();
- if(success)
- {
- cout<<"patient added:";
- }
- else
- {
- cout<<"error:the queue is full.cannot add patient:";
- }
- outputpatient(&p);
- cout<<"press any key";
- getch();
- }
- break;
- case3: //take out patient for operation
- p=q->getnextpatient();
- clrscr();
- if(p.ID[0])
- {
- cout<<"patient to operste:";
- outputpatient(&p);
- }
- else
- {
- cout<<"there is no patient to operate :";
- cout<<"press any key";
- getch();
- break;
- case4: //remove dead patient from queue
- p=inputpatient();
- if(p.ID[0])
- {
- success=q->removedeadpatient(&p);
- clrscr();
- if(success)
- {
- cout<<"patient removed:";
- }
- else
- {
- cout<<"error:cannot find patient:";
- }
- outputpatient(&);
- cout<<"press any key";
- getch();
- }
- break;
- case5: //list queue
- clrscr();
- q->outputlist();
- cout<<"press any key";
- getch();
- break;
- }
- }
- }
- void main()
- {
- int i,menuchoice=0;
- queue departments[3];
- strcpy(departments[0].departmentname,"heart clinic");
- strcpy(departments[1].departmentname,"lung clinic");
- strcpy(departments[2].departmentname,"plastic surgery");
- while(menuchoice !=4)
- {
- clrscr();
- cout<<"welcome to software city hospital";
- cout<<"please enter your choice:";
- for(i=0;i<3;i++)
- {
- cout<<" "<<(i+1)<<":"<<departments[i].departmentname;
- }
- cout<<"4: exit";
- menu choice=readnumber();
- if(menuchoice>=1&&menuchoice<=3)
- {
- departmentmenu(departments+(menuchoice-1));
- }
- }
- }
