句子单词逆序

#include 
#include 
using namespace std;

int main()
{
    string s, s_;
    getline(cin, s);
    stringstream ss(s);
    vector  str;
    while(ss >> s_)
    {
        str.push_back(s_);
    }
    for(int j = str.size() - 1; j >= 0; j--)
        cout << str[j] << " ";
    return 0;
}