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();
     }
 }