main()
{
char ch;
system("cls");
printf("\n\n\n\n\n\n\n\n\n");
printf("\n\t\t\t\t---WELCOME---");
printf("\n\t\t\t---AIRLINE RESERVATION---");
printf("\n\t\t");
getchar();
az:
system("cls");
printf("\n A:New Customer");
printf("\n B:Old Customer");
printf("\n C:Employees\n");
printf("\n E:Exit\n");
scanf("%c",&ch);
system("cls");
switch(ch)
{
case 'A':
case 'a':
newcustomer();
break;
case 'B':
case 'b':
oldcustomer();
break;
case 'C':
case 'c':
employee();
case 'E':
case 'e':
system("cls");
printf("\n\n\t\t\t\tTHANK YOU");
printf("\n\n\n\n\n\n\tFOR USING THIS SERVICE");
system("sleep 2000");
exit(0);
break;
default:
system("cls");
printf("\n Incorrect Input");
printf("\n Any key to continue");
getchar();
goto az;
}
printf("\n\n\n\n\n\t\t\t\t\t Thank you for booking with us.");
getchar();
}
int main(void)
{
Queue line;
Item temp; //关于顾客的数据
int hours; //模拟的小时数
int perhours; //每小时的平均顾客数
long cycle, cyclelimit; //循环计数器，计数器的上界
long turnaways = 0; //因队列已满而被拒绝的顾客数量
long customers = 0; //被加入队列的顾客数
long served = 0;
long sum_line = 0; //累计的队列长度
long wait_time = 0; //从当前到Sigmund空闲所需的时间
double min_per_cust;
long line_wait = 0;
InitializeQueue(&line);
srand(time(0));
puts("case study: sigmund lander's advice booth");
puts("enter the number of simulation hours: ");
scanf("%d",&hours);
cyclelimit = MIN_PER_HR * hours;
puts("enter the average number of customers per hour: ");
scanf("%d",&perhours);
min_per_cust = MIN_PER_HR / perhours;
for (cycle = 0; cycle < cyclelimit; cycle++)
{
if (newcustomer(min_per_cust))
{
if (QueueIsFull(&line)) //如果队列是满的
turnaways++;
else //如果队列不是满的
{
customers++;
temp = customertime(cycle);
EnQueue(temp, &line);
}
}
if (wait_time <= 0 && !QueueIsEmpty(&line)) //如果不需要等待，且队列不是空的；意味着只有一个人！
{
DeQueue(&temp, &line);
wait_time = temp.processtime;
line_wait += cycle - temp.arrive;
served++;
}
if (wait_time > 0)
wait_time--;
sum_line += QueueItemCount(&line);
}
if (customers > 0)
{
printf("customer acccepted: %ld\n",customers);
printf("customer served:%ld\n",served);
printf( "turnaways: %ld\n",turnaways);
printf("average queue size: %.2f\n",(double)sum_line / cyclelimit);
printf(" average wait time: %.2f minutes\n",(double)line_wait / served);
}
else
puts("no customer!");
EmptyTheQueue(&line);
puts("BYE!");
return 0;
}
int main()
{
srand(time(0)); // random initializing of rand()
cout << "Case Study: Bank of Heather Automatic Teller\n";
cout << "Enter maximum size of queue: ";
int qs;
cin >> qs;
Queue line(qs); // line queue holds up to qs people
cout << "Enter the number of simulation hours: ";
int hours; // hours of simulation
cin >> hours;
// simulation will run 1 cycle per minute
cout << "This operation can take few minutes..." << endl;
long cyclelimit = MIN_PER_HR * hours; // # of cycles
double min_per_cust; // average time between arrivals
double perhour;
long turnaways; // turned away by full queue
long customers; // joined the queue
long served; // served during the simulation
long sum_line; // cumulative line length
int wait_time; // time until autoteller is free
long line_wait; // cumulative time in line
double average_wait_time = 0;
do {
perhour = rand() % 60 + 1;
min_per_cust = MIN_PER_HR / perhour;
Item temp; // new customer data
turnaways = 0;
customers = 0;
served = 0;
sum_line = 0;
wait_time = 0;
line_wait = 0;
for (int cycle = 0; cycle < cyclelimit; cycle++)
{
if (newcustomer(min_per_cust)) // have newcomer
{
if (line.isfull())
turnaways++;
else
{
customers++;
temp.set(cycle); // cycle = time of arrival
line.enqueue(temp); // add newcomer to line
}
}
if (wait_time <= 0 && !line.isempty())
{
line.dequeue (temp); // attend next customer
wait_time = temp.ptime(); // for wait_time minutes
line_wait += cycle - temp.when();
served++;
}
if (wait_time > 0)
wait_time--;
sum_line += line.queuecount();
}
average_wait_time = (double)line_wait / served;
//} while (average_wait_time != 1.0);
} while ( !(average_wait_time <= 1.05 && average_wait_time >= 0.95) );
// reporting results
if (customers > 0)
{
cout << "customers per hour: " << perhour << endl;
cout << "customers accepted: " << customers << endl;
cout << " customers served: " << served << endl;
cout << " turnaways: " << turnaways << endl;
cout << "average queue size: ";
cout.precision(2);
cout.setf(ios_base::fixed, ios_base::floatfield);
cout << (double) sum_line / cyclelimit << endl;
cout << " average wait time: "
<< (double) average_wait_time << " minute\n";
}
else
cout << "No customers!\n";
cout << "Done!\n";
system("PAuse");
return 0;
}
