求高手解决 cin cout 的问题

程序如下
#include "VEmotion.h"
#include<iostream>
using namespace std;
void main()
{
int index=0;
AMsg pMsg;
AMsg UName;
AMsg questions[10]={"你喜欢跳舞吗玩吗？（y/n）","我想和你交朋友,你愿意吗？（y/n）","亲爱的，你爱我吗？（y/n）","嫁给我吧（y/n）","我们离婚吧（y/n）"};
cout<<"输入姓名：";
cin>>UName;
cout<<"今天遇到一个熟悉的陌生人，他对你很感兴趣……"<<endl;
VEmotion sample;
cout<<"嗨！"<<UName<<",";
while(1)
{
  cout<<questions[index];
  cin>>pMsg;
  sample.event(pMsg);
  index=sample.getRelation()-1;
  if(sample.getRejection()==MAX_BEAR_TIME)
  {
    cout<<endl<<"***你很讨厌我吗？？？****"<<endl;
  }
  if(sample.getRelation()==BYEBYE)
  {
    cout<<endl<<"***对不起，不要流泪****"<<endl;
  }
}
}
--------------------Configuration: zhu3_5 - Win32 Debug--------------------
Compiling...
main.cpp
C:\Documents and Settings\zhu3_5\main.cpp(10) : error C2872: 'cout' : ambiguous symbol
C:\Documents and Settings\zhu3_5\main.cpp(11) : error C2872: 'cin' : ambiguous symbol
C:\Documents and Settings\zhu3_5\main.cpp(12) : error C2872: 'cout' : ambiguous symbol
C:\Documents and Settings\zhu3_5\main.cpp(14) : error C2872: 'cout' : ambiguous symbol
C:\Documents and Settings\zhu3_5\main.cpp(17) : error C2872: 'cout' : ambiguous symbol
C:\Documents and Settings\zhu3_5\main.cpp(18) : error C2872: 'cin' : ambiguous symbol
C:\Documents and Settings\zhu3_5\main.cpp(23) : error C2872: 'cout' : ambiguous symbol
C:\Documents and Settings\zhu3_5\main.cpp(27) : error C2872: 'cout' : ambiguous symbol
Error executing cl.exe.

main.obj - 8 error(s), 0 warning(s)