https://blog.csdn.net/onever_say_love/article/details/49123935
#include<iostream>
#include<string>
#include<sstream>
#include<vector>
using namespace std;
int main(){
//用于存放分割后的字符串
vector<string> res;
//待分割的字符串，含有很多空格
string word=" Hello, I want to learn C++! ";
//暂存从word中读取的字符串
string result;
//将字符串读到input中
stringstream input(word);
//依次输出到result中，并存入res中
while(input>>result)
res.push_back(result);
//输出res
for(int i=0;i<res.size();i++){
cout<<res[i]<<endl;
}
return 0;
}