getline在vc6.0中的一个小问题

笨笨洋葱

下面小程序中为什么在vc++6.0中运行结果却得不到所需的结果?

#include <iostream>
#include <string>
using namespace std;

int main ()
{
  string mystr;
  cout << "What's your name? ";
  getline (cin, mystr);
  cout << "Hello " << mystr << ".\n";
  cout << "What is your favorite color? ";
  getline (cin, mystr);
  cout << "I like " << mystr << " too!\n";
  return 0;
}


在VC++6.0运行，其结果如下：(下面黑粗体字是键盘输入的)
What's your name? Aqua  
Hello Aqua.
What is your favorite color? blue
I like too!


为什么在所需结果"I like blue too!"中会缺少"blue"?