tai lieu lap trinh socket docx

class Client{ static void Mainstring[] args { IPEndPoint iep = new IPEndPointIPAddress.Parse"127.0.0.1", 2008; Socket client = new SocketAddressFamily.InterNetwork, SocketType.Stream

class Client

{

static void Main(string[] args)

{

IPEndPoint iep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 2008);

Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); client.Connect(iep);

byte[] data = new byte[1024];

int recv = client.Receive(data);

string s = Encoding.ASCII.GetString(data, 0, recv);

Console.WriteLine("Server gui:{0}", s);

string input;

while (true)

{

input = Console.ReadLine();

//Chuyen input thanh mang byte gui len cho server

data = new byte[1024];

data = Encoding.ASCII.GetBytes(input);

client.Send(data, data.Length, SocketFlags.None);

if (input.ToUpper().Equals("QUIT")) break;

data = new byte[1024];

recv = client.Receive(data);

s = Encoding.ASCII.GetString(data, 0, recv);

Console.WriteLine("Server gui:{0}", s);

if (s == "QUIT") break;

}

client.Disconnect(true);

client.Close();

cau 2 server

class Seryer

{

static void Main(string[] args)

{

IPEndPoint iep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 2008);

Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); server.Bind(iep);

server.Listen(10);

Console.WriteLine("Cho ket noi tu client");

Socket client = server.Accept();

Console.WriteLine("Chap nhan ket noi tu:{0}", client.RemoteEndPoint.ToString());

string s = "CMung DVoi Server, Upper, Tinh Tong voi CP: T X Y, T.DO X la ST1, Y ST2"; //Chuyen chuoi s thanh mang byte

byte[] data = new byte[1024];

data = Encoding.ASCII.GetBytes(s);

//gui nhan du lieu theo giao thuc da thiet ke

client.Send(data, data.Length, SocketFlags.None);

while (true)

{

data = new byte[1024];

int recv = client.Receive(data);

if (recv == 0) break;

//Chuyen mang byte Data thanh chuoi va in ra man hinh

s = Encoding.ASCII.GetString(data, 0, recv);

//Bat dau tinh Tong, Xem Cu Phap Nhap Tren

string[] ma = new string[5];

int t=0;

for (int i = 0; i < 5; i++)

{

ma = s.Split(' ');

}

try//xu li ngoai le

{

if (ma[0] == "T")

{

t = Convert.ToInt32(ma[1]) + Convert.ToInt32(ma[2]); }

}

catch {

string gcl="Ban Da Nhap Sai Cu Phap, Enter De Ket Thuc CT"; data = Encoding.ASCII.GetBytes(gcl);

client.Send(data, data.Length, SocketFlags.None);

s="QUIT";

data = Encoding.ASCII.GetBytes(s);

client.Send(data, data.Length, SocketFlags.None);

}

Console.WriteLine(t.ToString());

Console.WriteLine("Clien gui len:{0}", s);

//Neu chuoi nhan duoc la Quit thi thoat

if (s.ToUpper().Equals("QUIT")) break;

//Gui tra lai cho client chuoi s

s = s.ToUpper();

data = new byte[1024];

//Tai day dung if de lua chon upper hay tinh tong

if (ma[0] == "T")

{

Data=Encoding.ASCII.GetBytes(t.ToString());

}

else {

data = Encoding.ASCII.GetBytes(s);

}

client.Send(data, data.Length, SocketFlags.None);

}

client.Shutdown(SocketShutdown.Both);

client.Close();

server.Close();

cau 3 xu li chuoi

namespace ConsoleApplication1

{

class Program

{

static void Main(string[] args)

{

Console.WriteLine("Nhap vao chuoi 1");

string s = Console.ReadLine();

Console.WriteLine("\nNhap vao chuoi 2");

string s2 = Console.ReadLine();

string[]b=s.Split(' ');

string c=" ";

for(int i=0;i<b.Length;i++)

{

if(!b[i].Equals(" "))

c+=b[i];

}

}

string[] t = s2.Split(' ');

string w = " ";

for (int i = 0; i <t.Length; i++)

{

if (!t[i].Equals(" "))

{

w += t[i];

}

}

Console.WriteLine("\nMang sau khi xoa khoang trang la : {0}",c); char[]d=s.ToCharArray();

Array.Reverse(d);

Console.WriteLine("\nDao nguoc chuoi");

Console.WriteLine(d);

Array.Sort(b);

Console.WriteLine("\nSap xep chuoi theo do dai tang dan"); foreach (string tang in b)

{

Console.WriteLine(tang);

}

Console.WriteLine("\nSap xep chuoi theo do dai giam dan"); Array.Reverse(b);

foreach (string giam in b)

{

Console.WriteLine(giam);

}

Console.Write("\nXac dinh vi tri can tim trong chuoi\n");

Console.WriteLine("Nhap ki tu muon tim chuoi 1");

char m =char.Parse(Console.ReadLine());

int z = s.IndexOf(m);

Console.WriteLine("Vi tri ki tu trong chuoi 1 la: {0}\n",z+1); Console.WriteLine("Nhap ki tu muon tim chuoi 2");

char m1 = char.Parse(Console.ReadLine());

int z1 = s2.IndexOf(m1);

Console.WriteLine("Vi tri ki tu trong chuoi 2 la: {0}\n", z1+1); Console.Write("\nGhep chuoi\n");

``Console.WriteLine("Ghep chuoi 1 vao chuoi 2");

string[] mang = new string[] { s, s2 };

string q = String.Join(" ", mang);

Console.WriteLine(q);

Console.Write("\nSo sanh chuoi\n");

int y = String.Compare(s, s2);

if(y==1)

Console.Write("s ngan hon s2\n");

else if(y==-1)

Console.Write("s dai hon s2\n");

else

Console.Write("s bang s2\n");

Console.Write("\nChen phan tu vao vi tri xac dinh trong chuoi s\n"); Console.Write("Nhap tu ban muon chen: ");

string k = Console.ReadLine();

int a;

Console.Write("Nhap vi tri ban muon chen trong chuoi s a = ");

a = int.Parse(Console.ReadLine());

string chen = s.Insert(a, k);

Console.Write("Ket qua sau khi chen: " + chen);

Console.Write("\n Xoa phan tu trong chuoi s\n");

int a1,b1;

Console.Write("Nhap vi tri bat dau xoa trong chuoi s a1 = "); a1 = int.Parse(Console.ReadLine());

Console.Write("Xoa bao nhieu phan tu trong chuoi s b1 = "); b1 = int.Parse(Console.ReadLine());

string xoa = s.Remove(a1, b1);

Console.Write("Ket qua sau khi xoa: " + xoa);

Console.Write("\n Thay the tu bat ki trong chuoi s\n");

string a2,b2;

Console.Write("Nhap tu muon thay the: ");

a2=Console.ReadLine();

Console.Write("Thay bang: ");

b2=Console.ReadLine();

string thaythe = s.Replace(a2, b2);

Console.Write("Ket qua sau khi thay the s = " + thaythe); Console.ReadLine();

}

}

}

Cau 4 xay dung lop sv

class sinhvien

{

public string tensv;

public string ngaysinh;

public float diem;

public sinhvien()

{

tensv = "nguyen van a";

ngaysinh = "08/12/89";

diem = 0;

}

public sinhvien(string t, string ns, float d)

{

tensv = t;

ngaysinh = ns;

diem = d;

}

public void nhap()

{

Console.WriteLine("ban hay nhap ten cho sv:"); tensv = Console.ReadLine();

Console.WriteLine("ban hay nhap ngay sinh cho sv:"); ngaysinh = Console.ReadLine();

Console.WriteLine("ban hay nhap diem cho sv:"); diem= float.Parse(Console.ReadLine());

}

class Program

{

static void Main(string[] args)

{

int n;

Console.WriteLine("ban muon nhap bao nhieu sv:");

n= int.Parse(Console.ReadLine());

sinhvien[] sv = new sinhvien[n];

for (int i = 0; i< n;i++)

{

sv[i] = new sinhvien();

Console.WriteLine("nhap thong tin sinh vien:");

sv[i].nhap();

cau 5 xu li file

string fn = "filebinary.txt";

FileStream myfile = new FileStream(fn, FileMode.CreateNew); BinaryWriter brfile = new BinaryWriter(myfile);

int n;

Console.WriteLine(" Nhap N So Nguyen");

n = Int32.Parse(Console.ReadLine());

for (int i = 0; i <= n; i++)

{

brfile.Write(i);

}

brfile.Close();

myfile.Close();

cau 6 tinh tong fil nhi phan

string fn = "C:/filebinary.txt";

FileStream myfile = new FileStream(fn, FileMode.Open); BinaryReader brfile = new BinaryReader(myfile);

int a,tong=0;

Console.WriteLine("Bat dau doc File ");

while(brfile.PeekChar()!=-1)

{

a= brfile.ReadInt32();

Console.Write("{0}", a);

tong = tong + a;

}

Console.WriteLine();

Console.WriteLine("Ket thuc qua trinh doc File ");

Console.WriteLine(" Tong = {0}", tong);

Console.ReadLine();

brfile.Close();

cau 7 mang voi forch

int []a = new int[5];

Console.WriteLine("Nhap vao cac phan tu ");

for(int i =0; i<5; i++)

{

Console.Write("Phan tu a[{0}]= ",i);

a[i] = int.Parse(Console.ReadLine());

}

int tong = 0;

for(int i = 0; i < a.Length; i++)

tong =tong +a[i];

///////Xuat mang

Console.WriteLine("Danh sach cac phan tu ");

foreach (int i in a)

{

Console.WriteLine(i.ToString()+"\t");

}

Console.WriteLine(" Tong cac phan tu = {0}",tong); Console.Read();

}

Cau 8 mang so nguyen

int[] n;

n = new int[100];

int m;

int s = 0;

Console.WriteLine("ban muon nhap bao nhieu phan tu:");

m = int.Parse(Console.ReadLine());

for (int i = 0; i < m; i++)

{

Console.WriteLine("ban hay nhap phan tu thu a[{0}]:", i); n[i] = int.Parse(Console.ReadLine());

if (n[i] % 5 == 0)

s = s + 1;

}

Console.WriteLine("so luong cac so chia het cho 5 la:{0}", s); Console.ReadLine();

}