C++从文件中按照单词读取内容

//read data from the file,Word By Word
//when used in this manner,we'll get space-delimited bits of text from the file
//but all of the whitespace that separated words (including newlines) was lost.
//http://www.sharejs.com
vector<string> ReadDataFromFileWBW()
{
    ifstream fin("Input.txt"); 
    string strWord("");
    vector<string> v;
    while( fin >> strWord )
    {
    //字符串string类的比较要用compare函数
        if (strWord.compare(strWord.length()-1,1,".") == 0)  
        {
            strWord.erase(strWord.length()-1,1);
            v.push_back(strWord);
            return v;
        }  
        v.push_back(strWord);
    }
}