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Priority Queue.cpp
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Priority Queue.cpp
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#include <iostream>
#include <string>
using namespace std;
string q[10];
int pr[10];
int r=-1,f=-1,n;
void enqueue(string data,int p)
{
int i;
if((f==0)&&(r==n-1))
cout<<"q full";
else
{
if(f==-1)
{
f=r=0;
q[r]=data;
pr[r]=p;
}
else
{
for(i=r;i>=f;i--)
{
if(p>pr[i])
{
q[i+1]=q[i];
pr[i+1]=pr[i];
}
else
break;
}
q[i+1]=data;
pr[i+1]=p;
r++;
}
}
}
void print()
{
int i;
for(i=f;i<=r;i++)
{
cout<<"patient name "<<q[i];
switch(pr[i])
{
case 1:
cout<<"priority-checkup"<<endl;
break;
case 2:
cout<<"priority-non serious"<<endl;
break;
case 3:
cout<<"priority-serious"<<endl;
break;
default:
cout<<"priority not found"<<endl;
}
}
}
void dequeue()
{
if(f==-1)
{
cout<<"queue is empty";
}
else
{
cout<<"deleted element"<<q[f]<<endl;
cout<<"iTSpriority="<<pr[f]<<endl;
if(f==r)f=r=-1;
else f++;
}
}
int main()
{
string data;
int opt,i,p;
cout<<"enter your choice"<<endl;
do
{
cout<<"1.for insert data in queue"<<endl<<"2 for show data in queue"<<endl<<"3 for delete data from queue"<<endl<<"0 for exit"<<endl;
cin>>opt;
switch(opt)
{
case 1:
cout<<"enter number of patient"<<endl;
cin>>n;
i=0;
for(i=0;i<n;i++)
{
cout<<"enter your name of patient";
cin>>data;
cout<<"enter your priority(3-serious,2-non-serious,1-general checkup)";
cin>>p;
enqueue(data,p);
}
break;
case 2:
print();
break;
case 3:
dequeue();
break;
}
}
while(opt!=0);
return 0;
}