#include <fstream>
#include <iostream>

std::string execute(const std::string& command) {
    system((command + " > temp.txt").c_str());

    std::ifstream ifs("temp.txt");
    std::string ret{ std::istreambuf_iterator<char>(ifs), std::istreambuf_iterator<char>() };
    ifs.close(); // must close the inout stream so the file can be cleaned up
    if (std::remove("temp.txt") != 0) {
        perror("Error deleting temporary file");
    }
    return ret;
}

int main() {
    std::cout << execute("whoami") << '\n';
}