Как перевести string в массив integer в с++?

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#include 
#include 
#include 

int main() {
    std::string str = "1 2 3 4 5";
    std::vector arr;
    std::string delimiter = " ";
    size_t pos = 0;
    while ((pos = str.find(delimiter)) != std::string::npos) {
        std::string token = str.substr(0, pos);
        int num = std::stoi(token);
        arr.push_back(num);
        str.erase(0, pos + delimiter.length());
    }
    int num = std::stoi(str);
    arr.push_back(num);

    for (int i : arr) {
        std::cout << i << " ";
    }
    std::cout << std::endl;

    return 0;
}