Homework 3: Simple Discrete Even Simulation Using Queues Solution

 The assignment:
Customers arrive at the bank to make deposits or withdrawals and are served by a teller. 
The following information is kept in a structure about each customer. 
    1. A structure named customer contains at least the following information:   
struct Customer {
int ID; customerId;
string fName; // // customer first name as either an array of char or a string
string lName; // customer last name as either an array of char or a string
double amount of deposit or withdrawal 
char Transaction Type: Deposit or Withdrawal 
int arrivalTime. ; 
int serviceTime ;
         double Balance: Account balance 
         int TellerNo; // a value between 1 and 3 
};

2.  Create an input file containing the information of at least 35 customers.
3.  Create an array of struct: read the customers’ data from the input file into the array.
customer custList[n]; // n= 35 
4. Create a queue: you can use the standard library template for the queue, or you can write your own code for the different queue operations. The queue stores data of type customer.
5. Also submit an output file of all output that is being sent to the console.

What to do:
You need to code at least the following functions: 
I. Random number generator 
II. Initialization function: 
    • initialize an int named timer= 0 ; 
    • initialize an int named clock = 0 ; 
    • initialize the number of transactions served by each teller to zero.

1. Read customers’ data from the input file into an array of structures.
2. For each customer in the array, 
    a.       Generate a random number between 1 and 3 representing the teller station number.
            b. Generate a number between 1 and 10 and add it to the timer, then store it as the arrival time value for the customer. 5 5 8
III. . Create the queue function. 
enqueue the customer structure into the queue


IV. Teller Function 
4. Dequeue the customers one at a time from the queue and do the following:
    a. Add the amount of deposit or subtract the amount of the withdrawal to/from the balance. 
            b. Increment the number of transactions served by the teller specified for that teller. 
c. Generate a random number waitTime between 0 and 5 and
d. Update the clock where clock = clock+waitTime
store the update clock time in the service time in the corresponding structure for that customer. 

Reporting function
The reporting function place a call to the following functions:  
1. Customer summary:  display for each customer: name, balance, amount, and type of transactions (deposit, withdrawal), arrival time, and waiting time: write the output to both the screen and file. 
2. Display for each Teller, the total number of transactions served by each teller with a subtotal for each transaction type in addition to the a total of the number of all transactions severed by that teller. Writer the output to both the screen and file. 
3. For the system:  Display the total number of wait time, and average number of transactions served by each teller.  
Write the output to both the screen and file.