Question

Now I'm working on this, but I can't assign value. Please help me how to assign value (You don't need to care about Queue h file)

It's C++

=========================-

struct Customer
{
char id;
int arrivalTime;
int endTime;
};

int main()
{
Queue<Customer> waitLine;
waitLine.push("a", 10, 20); // i don't know how to push here.
  
return 0;
}

Answer 1

Hi,

Please go through the code for more clarity.

Note: I've used inbuilt queue from stl. U can use your own queue but logic for storing is same for both.

In your given code, you want to store customer type in queue.

Customer is a struct which contains the 3 data members.

So first you need to store the 3 data members data in structure then push that struct in queue.

Example:

waitLine.push("a", 10, 20); which is wrong

correct method: first store a,10,20 in customer variable

customer temp;

temp.id = 'a'; temp.arrivalTime = 10; temp.endTime = 20;

waitLine.push(temp);

C++ Code:

//Program starts here

#include <iostream>
#include<queue>//for queue stl, U can use your own queue

using namespace std;

struct customer
{
char id;
int arrivalTime;
int endTime;
};

int main() {
queue<customer>waitLine;//queue with type customer means u too store the varible of type customer
//first create varibale type customer
struct customer c;
//storing data member values in c
c.id = 'a';
c.arrivalTime = 4;
c.endTime = 5;
waitLine.push(c);//pushing in queue of type customer(c is customer type variable)
//accessing queue
struct customer d = waitLine.front();//front of queue
//here printing the d now not c
cout << "customer id: " << d.id << " arrival : " << d.arrivalTime << " departure : " << d.endTime << endl;
}

//End of the program