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#include <iostream>
#include "afxsock.h"
#include "math.h"
#include<string>
#include<fstream>

#ifdef _DEBUG
#define new DEBUG_NEW
#endif
#define Saddress "127.0.0.1"
#define port 8080 //Same port as server
CWinApp theApp;

using namespace std;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
	int nRetCode = 0;

//initialize MFC and print and error on failure
	if (!AfxWinInit(::GetModuleHandle(NULL), NULL, GetCommandLine(), 0))
	{
		//TODO: change error code to suit your needs
		_tprintf(_T("Fatal error: MFC initialization failed\n"));
		nRetCode = 1;
	}
	else {
		//TODO: code your application's behaviour here
		CSocket client;
		AfxSocketInit(NULL);

//1.Create Socket
		client.Create();

if (client.Connect(CA2W(Saddress), port))
		{
			cout << "Client have connected to Server!" << endl;

//Receiving from server the position number
			int id;
			client.Receive((char*)&id, sizeof(id), 0);
			cout << "\n\nThis is client number " << id + 1 << endl << endl;

char  r_str[1000], s_str[1000];
			//Receiving returning results from server
			client.Receive(r_str, 10, 0);
			int len = atoi(r_str);
			client.Receive(r_str, len, 0);
			r_str[len] = 0;

cout << "\nServer: " << r_str;

//Send command q/l/r
			gets_s(s_str);
			//Wrong command
			while (strcmp(s_str, "3") != 0 && strcmp(s_str, "quit") != 0 && strcmp(s_str, "login") != 0 && strcmp(s_str, "1") != 0 && strcmp(s_str, "2") != 0 && strcmp(s_str, "register") != 0) {
				cout << "Wrong command" << endl;
				cout << "Retype: ";
				gets_s(s_str);
			}
			// goi chieu dai chuoi
			char buff[10];
			_itoa_s(strlen(s_str), buff, 10);
			client.Send(buff, 10, 0);
			//gui chuoi
			client.Send(s_str, strlen(s_str), 0);
			if (strcmp(s_str, "3") == 0 || strcmp(s_str, "quit") == 0) {
				client.Close();
				return nRetCode;
			}
			else if (strcmp(s_str, "1") == 0 || strcmp(s_str, "login") == 0) {
				int check = 0;
				bool success = false;
				do {

//username
					client.Receive(r_str, 10, 0);
					len = atoi(r_str);
					client.Receive(r_str, len, 0);
					r_str[len] = 0;

cout << r_str;

//Send username
					char username[1000];
					gets_s(username);
					// goi chieu dai chuoi

_itoa_s(strlen(username), buff, 10);
					client.Send(buff, 10, 0);
					//gui chuoi
					client.Send(username, strlen(username), 0);

// Nhan password
					client.Receive(r_str, 10, 0);
					len = atoi(r_str);
					client.Receive(r_str, len, 0);
					r_str[len] = 0;

cout << r_str;

//Send password
					char password[1000];
					gets_s(password);
					// goi chieu dai chuoi

_itoa_s(strlen(password), buff, 10);
					client.Send(buff, 10, 0);
					//gui chuoi
					client.Send(password, strlen(password), 0);
					//nhan ket qua
					client.Receive(r_str, 10, 0);
					len = atoi(r_str);
					client.Receive(r_str, len, 0);
					r_str[len] = 0;
					if (strcmp(r_str, "Invalid account") == 0) {
						cout << r_str << endl;
						check++;
						cout << 3 - check << " chances left" << endl;
					}
					else {
						cout << r_str;
						check = 3;
						success = true;
					}

} while (strcmp(r_str, "Invalid account") == 0 && check != 3);

if (success) {
					char command[1000];
					gets_s(command);
					_itoa_s(strlen(command), buff, 10);
					client.Send(buff, 10, 0);
					//gui chuoi
					client.Send(command, strlen(command), 0);
				}
				else {
					cout << "UNSUCCESSFULL to login" << endl;
				}

client.Close();
				return nRetCode;
			}
			else if (strcmp(s_str, "2") == 0 || strcmp(s_str, "register") == 0) {

client.Receive(r_str, 10, 0);
				len = atoi(r_str);
				client.Receive(r_str, len, 0);
				r_str[len] = 0;

cout << r_str;

char username[1000];
				gets_s(username);

_itoa_s(strlen(username), buff, 10);
				client.Send(buff, 10, 0);
				//gui chuoi
				client.Send(username, strlen(username), 0);

client.Receive(r_str, 10, 0);
				len = atoi(r_str);
				client.Receive(r_str, len, 0);
				r_str[len] = 0;

cout << r_str;

while (strcmp(r_str, "Invalid username\n This username has already been used\n Proceed to input another username\n") == 0)
				{
					client.Receive(r_str, 10, 0);
					len = atoi(r_str);
					client.Receive(r_str, len, 0);
					r_str[len] = 0;

cout << r_str;

char username[1000];
					gets_s(username);
					// goi chieu dai chuoi

_itoa_s(strlen(username), buff, 10);
					client.Send(buff, 10, 0);
					//gui chuoi
					client.Send(username, strlen(username), 0);

client.Receive(r_str, 10, 0);
					len = atoi(r_str);
					client.Receive(r_str, len, 0);
					r_str[len] = 0;

cout << r_str;
				 }
				// Nhan password
				client.Receive(r_str, 10, 0);
				len = atoi(r_str);
				client.Receive(r_str, len, 0);
				r_str[len] = 0;

cout << r_str;

//Send password
				char password[1000];
				gets_s(password);
				// goi chieu dai chuoi

_itoa_s(strlen(password), buff, 10);
				client.Send(buff, 10, 0);
				//gui chuoi
				client.Send(password, strlen(password), 0);

}

}
		else {
			printf("Can not connect to server!");
		}
		getchar();
		client.Close();
	}
	getchar();
	return nRetCode;
}

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