separating C++ code in to multiple files - c++

Question

I hope you are all doing well.
I have the below code which manages a printing queue. I need to separate it into the below files and I dont know how to this. Oddly i've never been asked to do this. Any help you can provide would be greatly appreciated. I am not sure what code goes in which file.
Files I need to separate my code into:
1. heap.h - declaration file for heap.
2. heap.cpp - implementation file for heap.
3. pqtype.h - declaration file for priority queue.
4. pqtype.cpp - implementation file for priority queue.
5. test.cpp - driver file.
My current Code:
#include <iostream>
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <string>
using namespace std;
struct node
{
int priority;
int jNum;
string jName;
struct node *next;
};
class PriorityQueue
{
private:
node *front;
public:
PriorityQueue()
{
front = NULL;
}
void addJob(string item, int priority, int number)
{
node *temp, *q;
temp = new node;
temp->jName = item;
temp->priority = priority;
temp->jNum = number;
//whether queue is empty
if (front == NULL || priority < front->priority)
{
temp->next = front;
front = temp;
}
else
{
q = front;
while (q->next != NULL && q->next->priority <= priority)
q = q->next;
temp->next = q->next;
q->next = temp;
}
}
void printJob()
{
node *temp;
if (front == NULL)
cout << "There Are No Print Requests In The Queue.\n";
else
{
temp = front;
cout << "\nNow printing Request # " << temp->jNum << " " <<"For "<< temp->jName <<"\n"<< endl;
front = front->next;
free(temp);
}
}
void viewJob()
{
node *ptr;
ptr = front;
if (front == NULL)
cout << "There Are No Print Requests In The Queue\n\n";
else
{
while (ptr != NULL)
{
cout << "Job #: " << ptr->jNum << " " <<"For "<< ptr->jName <<"\n"<< endl;
ptr = ptr->next;
}
}
}
};
int main()
{
int choice, priority;
PriorityQueue pq;
char ch;
string jName;
int number = 0;
cout << "Printing Queue\n" << endl;
do
{
cout << "==============" << endl;
cout << "1. Add Job\n";
cout << "2. Print Job\n";
cout << "3. View Job\n";
cout << "4. Exit\n";
cout << "\nEnter Your Option Now : ";
cin >> choice;
switch (choice)
{
case 1:
cout << "Are You A Student (s or S), TA (t or T), Or Instructor (i or I)? ";
cin >> ch;
if (ch == 'i' || ch == 'I')
{
priority = 1;
jName = "Instructor";
cout << "\nJob Successfully Entered.\n\n";
}
else if (ch == 't' || ch == 'T')
{
priority = 2;
jName = "TA";
cout << "\nJob Successfully Entered.\n\n";
}
else if (ch == 's' || ch == 'S')
{
priority = 3;
jName = "Student";
cout << "\nJob Successfully Entered.\n\n";
}
number++;
pq.addJob(jName, priority, number);
break;
case 2:
pq.printJob();
break;
case 3:
pq.viewJob();
break;
case 4:
cout << "\nThank You For Using Printint Queue\nProgram Now Closing...\n\n";
break;
default:
cout << "\nInvalid Choice Selected! \n";
}
}
while (choice != 4);
system("PAUSE");
return 0;
}