【C++】输入方式

istream& getline ( istream &is , string &str , char delim );
istream& getline ( istream &is , string &str);

• is 进行读入操作的输入流
• str 存储读入的内容
• delim 终结符

cin.get()用于获取输入缓冲区的第一个字符，不会忽略任何分隔符

int cin.get();
istream& cin.get(char& var);
istream& get ( char* s, streamsize n );
istream& get ( char* s,  streamsize  n, char delim )。

连续从键盘读取想要的数据，以空格、tab或换行作为分隔符

cin>>a>>b>>c;

A Famous Saying: Much Ado About Nothing (2012/8).

    string s;
    char ch;
    while(cin.get(ch))
    {
        s.push_back(ch);
    }

    string str = "";
    getline(cin, str);

3 abc bca cab abc 1

  	int wordsNum = 0; 
 	cin >> wordsNum;
    vector vecStr(wordsNum, "");
    for(int i = 0; i < wordsNum; i++){
        string s = "";
        cin >> s;
        vecStr[i] = s;
    }
    string word = "";
    cin >> word;
    int k = 0;
    cin >> k;

10.0.3.193

输入IP地址，以’ . ‘分割。

	string strIP;
	cin >> strIP;
	stringstream iss(strIP);
	string sTmp = "";
	vector nums; //long

	while (getline(iss, sTmp, '.')) {
		nums.push_back(atol(sTmp.c_str()));
	}