A class CustomerService is defined to resolve customer service requests in the order in which they…

A class CustomerService is defined to resolve customer service requests in the order in which they are received. The details of the members of the class are given below: Class name : CustomerService Data members/instance variables: services[ ] : array to store customer service request size : to store the maximum capacity of the array first : to store the index of the first customer service request last : to store the index of the last customer service request Methods/Member functions: CustomerService(int s) : constructor to assign size = s, first = 0 and last = 0 void add(int reqst) : to insert a request at index last, if space is available, otherwise display “Request cannot be accepted at the moment” int del( ) : to remove and return the request at index first, if any, else return -9999

void add(int reqst)
{
    if (last == size)
        System.out.println("Request cannot be accepted at the moment");
    else
    {
        services[last] = reqst;
        last++;
    }
}

int del()
{
    if (first == last)
        return -9999;
    else
    {
        int val = services[first];
        first++;
        return val;
    }
}