c++. Run-Time Check Failure #2 - Stack around the variable 'cc' was corrupted.

Run-Time Check Failure #2 - Stack around the variable 'cc' was corrupted.

char cc[1024];   //此处如果索引值设置小了，就会出问题。比如：char cc[1];是由于建立的数组下标溢出造成的

 // vc2_2_4UDPserver_Txwtech.cpp : 定义控制台应用程序的入口点。

 //

 #include "StdAfx.h"

 #include <WinSock2.h>

 #include<stdio.h>

 #include<Windows.h>

 #pragma comment(lib,"WS2_32.lib")

 int main()

 {

     WSADATA data;

     WORD w=MAKEWORD(,);

     char sztext[]="欢迎您\r\n";

     ::WSAStartup(w,&data);

     SOCKET s;

     s=::socket(AF_INET, SOCK_DGRAM,);

     sockaddr_in addr,addr2;

     int n=sizeof(addr2);

     char buff[]={};

     addr.sin_family=AF_INET;

     addr.sin_port=htons();

     addr.sin_addr.S_un.S_addr=INADDR_ANY;

     ::bind(s,(sockaddr*)&addr,sizeof(addr));

     printf("UDP服务器已经启动\r\n");

     while()

     {

         char cc[];   //此处如果索引值设置小了，就会出问题。比如：char cc[1];是由于建立的数组下标溢出造成的

             //c=getchar();

     //    c='';

         printf("请输入C：");

         scanf("%s",cc);

         //sztext=c;

     //    strcpy(sztext,c);

         if (strcmp(cc,"qq")==)

             {

                 printf("即将退出%s",cc);

                 ::Sleep();

                 ::closesocket(s);

                 ::WSACleanup();

             //    strcpy(cc,"");

                 return ;

             }

         if(::recvfrom(s,buff,,,(sockaddr*)&addr2,&n)!=)

         {

             printf("%s已经连接上\r\n",inet_ntoa(addr2.sin_addr));

             printf("%s\r\n",buff);

             ::sendto(s,sztext,sizeof(sztext),,(sockaddr*)&addr2,n);

         //    break;

         }

     }

     ::closesocket(s);

     ::WSACleanup();

     if(getchar())

     {

         return ;

         //::sendto(s,sztext,sizeof(sztext),0,(sockaddr*)&addr2,n);

     }

     else

     {

         ::Sleep();

     }

 }