重大发现02：用cin输入空格的问题

写了个小例子，经过测试：

#include "stdafx.h"
#include <iostream>
#include <string>

using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
    cout<<"hello"<<endl;

    cout<<"this is "<<"a longer sentence\n";
   
    cout<<"please enter your age"<<endl;
   
    cout<<"type your fullname"<<endl;
    int age;
    string fullname;
    cin>>age;
    fflush(stdin);
    system("pause");
    getline(cin,fullname);
    cout<<"hi."<<fullname<<" I see you are "<<age<<" years old"<<endl;
    return 0;
}



//Output info....

hello
this is a longer sentence
please enter your age
type your fullname
34
请按任意键继续. . .
lu ning
hi.lu ning I see you are 34 years old
请按任意键继续. . .