C / C++ / MFC

/*
    Clent socket tcp
*/
#include<stdio.h> //printf
#include<string.h>    //strlen
#include<sys/socket.h>    //socket
#include<arpa/inet.h> //inet_addr
 
int main(int argc , char *argv[])
{
    int sock;
    struct sockaddr_in server;
    char message[1000] , server_reply[2000];
    int a; 
    char r1; 
     
     
    //Creation d1 socket
    sock = socket(AF_INET , SOCK_STREAM , 0);
    if (sock == -1)
    {
        printf("impossible de creer une socket\n");
    }
    puts("Socket creer!!!! good job");
     
    server.sin_addr.s_addr = inet_addr("127.0.0.1");//adresse ipv4
    server.sin_family = AF_INET;// famille d'@
    server.sin_port = htons( 8880 );//**en utilisent big endien NBO   pour la sérialiser , htons (host to network short) 
 
    //Connection au serveur

  puts ("connection au serveur\n") ;
    if (connect(sock , (struct sockaddr *)&server/*pointeur sur l'@ du serveur est qui est passé en parametre**/ , sizeof(server)) < 0)
    {
        perror("peut pas connecter au serveur");
        return 1;
    }
     
    puts("vous etnSes Connecté\n");
         //communition server
    while(1)
    {
        printf("Enter votre nbres : ");
        scanf("%d " ,&a );
        
         
        //envoyer data
        if  (( send(sock , (char * )& a , sizeof(&a) , 0) < 0)  ) 

        {
            puts("l'envoie a ete echoué");
            return 1;
        }
         
        //la réponse du serveur
        if( recv(sock , (char *)& a , 2000 , 0) < 0)
        {
            puts("recv echoué");
            break;
        }
         
        
    }
     
    close(sock);
    return 0;
}

/*
    C socket server TCP
*/
 
#include<stdio.h>
#include<string.h>    //strlen
#include<sys socket.h="">
#include<arpa inet.h=""> //inet_addr
#include<unistd.h>    //write
 
int main(int argc , char *argv[])
{
    int socket_desc , client_sock , c , read_size,read_size1;
    struct sockaddr_in server , client;
    char client_message[2000];
    int a;
    char t ;
     
    //Creation d1 socket
    socket_desc = socket(AF_INET , SOCK_STREAM , 0);
    if (socket_desc == -1)
    {
        printf("on peut pas creer la socket");
    }
    puts("Socket bien creer");
     
    //Preparer sockaddr_in structure
    server.sin_family = AF_INET;//***fammille d'@
    server.sin_addr.s_addr = INADDR_ANY;//********@ qqn
    server.sin_port = htons( 8880);//*****en utilisent big endien NBO   pour la sérialiser , htons (host to network short) 
     
    //Bind
    if( bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0)
    {
        
        perror("bind. Error");
        return 1;
    }
    puts("bind attaché");
     
    //Listen
    listen(socket_desc ,3);
     
    //Accept connection
    puts("attedez une connection...");
    c = sizeof(struct sockaddr_in);
     
    //accept conection de client qui vient de se connecter!
    client_sock = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c);
    if (client_sock < 0)
    {
        perror("accept failed");
        return 1;
    }
    puts("Connection accepté");
     
    //Receoit les message de client
    if ( (read_size = recv(client_sock , (char *)&a , 2000 , 0)) > 0 ) 
    {
        
        write(client_sock , &a , sizeof(&a)); 
                
    }
     
    if(read_size == 0)
    {
        puts("Client disconnected");
        fflush(stdout);
    }
    else if(read_size == -1)
    {
        perror("recv failed");
    }
     
    return 0;
}

<pre lang="c">

uint16_t Cur = 65535;
uint16_t Next = 14000;
uint32_t ResVal = 0;
ResVal = ((uint32_t)Cur + (uint32_t)Next);