Question

我意识到这种担忧几乎总是由于一个简单的错误，但我不能为我的生活找到这个错误的原因。我已多次浏览括号并检查我是否遗漏了任何内容，但没有看错。在我初始化数组时，令人作呕的方式令人厌恶，出了什么问题？

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <unistd.h>
#include <sys/poll.h>

#define BufferLength 100
#define SERVPORT 5011

int main(int argc, char * argv[])
{
  int sd, sd2, rc, length = sizeof(int);
  int totalcnt = 0, on = 1;
  char temp;
  char buffer[BufferLength];
  char init[10];
  struct sockaddr_in serveraddr;
  struct sockaddr_in their_addr;
  fd_set read_fd;
  struct timeval timeout;
  timeout.tv_sec = 60;
  timeout.tv_usec = 0;
  int new_sd;
  int nfds = 1; int len;
//..........................SOCKET SETUP..............................................||

  if((sd = socket(AF_INET, SOCK_STREAM, 0)) < 0)    
  {   
      perror("Socket error");     
      exit (-1); 
  }

  if((rc = setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on))) < 0)
  {   
      perror("socket setup error"); 
      close(sd); 
      exit (-1); 
  }

  memset(&serveraddr, 0x00, sizeof(struct sockaddr_in));
  serveraddr.sin_family = AF_INET;
  serveraddr.sin_port = htons(SERVPORT);
  serveraddr.sin_addr.s_addr = htonl(INADDR_ANY);

  printf("Using %s, listening at %d\n", inet_ntoa(serveraddr.sin_addr), SERVPORT);


//............................BINDING...............................................|| 

  if((rc = bind(sd, (struct sockaddr *)&serveraddr, sizeof(serveraddr))) < 0)
  {   
      perror("server binding error");    
      close(sd);    
      exit(-1);    
  }


//............................LISTENING.............................................||

  if((rc = listen(sd, 8)) < 0)               
  {    perror("listen error"); close(sd);    exit (-1);}
  else
       printf("Ready for up to eight connections...\n");

  int sin_size = sizeof(struct sockaddr_in);


//............................ACCEPTING..............................................||

  if((sd2 = accept(sd, (struct sockaddr *)&their_addr, &sin_size)) < 0)
  {    perror("Server-accept() error");   close(sd);    exit (-1);  }

  printf("Got connection from the accursed client: %s\n", inet_ntoa(their_addr.sin_addr));

  FD_ZERO(&read_fd);
  FD_SET(sd2, &read_fd);

//..................................POLL STUFF.......................................||

  int i,n;
  int m = 0;
  char ** init0 = (char**)malloc(9);
  for( m; m<10; m+=1)
       init0[m] = (char*)malloc(100);
  char * left = (char*)malloc(100);
  char * enter = (char*)malloc(100);
  char ** Tinit0 = (char**)malloc(9);
  for(m = 0; m<10; m+=1)
      Tinit0[m] = (char*)malloc(100);

  memset(left,0,100);
  for(m = 0; m<10; m+=1)
     memset(Tinit0[m],0,100);
  for(m = 0; m<10; m+=1)
    memset(init0[m],0,100);
  memset(enter, 0, 100);
  strcpy(enter,"Entered:_  ");
  strcpy(left,"Left: ");

  struct pollfd ufds[9];
  ufds[0].fd = sd;    
  ufds[0].events = POLLIN; 
  ufds[1].fd = sd2;
  ufds[1].events = POLLOUT;
  ufds[2].fd = sd2;
  ufds[2].events = POLLOUT;
  ufds[3].fd = sd2;
  ufds[3].events = POLLOUT;
  ufds[4].fd = sd2;
  ufds[4].events = POLLOUT;
  ufds[5].fd = sd2;
  ufds[5].events = POLLOUT;
  ufds[6].fd = sd2;
  ufds[6].events = POLLOUT;
  ufds[7].fd = sd2;
  ufds[7].events = POLLOUT;
  ufds[8].fd = sd2;
  ufds[8].events = POLLOUT;

  //timeout = (6000);

  n = poll(ufds, 9, 40000);
  do{
      for (i = 0; i < 9; i++)
      {
         if(ufds[i].revents == 0)
             continue;

         if (ufds[i].fd == sd)
         {
             do
             {
                 new_sd = accept(sd2, NULL, NULL);
                 ufds[nfds].fd = new_sd;
                 ufds[nfds].events = POLLIN;
                 nfds++;
              } while (new_sd != -1);
          }
          else 
          { 
             do
             {
                 rc = recv(ufds[i].fd, buffer, sizeof(buffer), 0);
                 len =rc;
                 if(strcmp(init0[i],"") == 0)                          // IF INITAL HAS NOT BEEN SET UP
                 {                                                  // (DURING FIRST CONNECTION FROM CLIENT)
                     if((rc == 1) && (FD_ISSET(sd2, &read_fd)))
                     {
                        printf("initial from client is: %s\n",buffer);
                        strcpy(init0[i],buffer);
                        printf("init0 is: %s\n", init0[i]); Tinit0[i] = init0[0];
                      }
                     strcat(enter, init0[i]); 
                     printf("string enter is: %s , about to try write enter\n",enter);
                     for(m = 1; m <9; m+=1) 
                         rc = send(ufds[m].fd, enter, 20, 0);
                 } 
                 strcat(Tinit0[i],"__");
                 for(m = 1; m <9; m+=1)
                      rc = send(ufds[m].fd, Tinit0[i], 100, 0);       
                 if(rc==0)
                 {
                     strcat(left, init0[i]);
                     printf("%s\n",left);
                     for(m = 1; m <9; m+=1)
                         rc = send(ufds[m].fd, left, 100, 0);
                 }
             } while(1==1);
           } //end of else
       } //end of for
   } //end of do 

}

Answer 1

您的do {} while()循环错过了while关键字。

所有括号匹配时输入结束时的语法错误

1 个答案: