从string到stringstream到vector <int>

#include<iostream>
#include <sstream>
#include<vector>
#include<string>

int main() {
    std::string str = "1 2 3 4 5";
    std::stringstream ss(str);
    std::vector<int> vec;

    int num;
    while (ss >> num) {
        vec.push_back(num);
    }

    for (int i = 0; i < vec.size(); i++) {
        std::cout<< vec[i] << " ";
    }

    return 0;
}