问生成10个字符的密码，使用3-6位数字和3-6大写字母，以C++表示。

EN

#include <iostream>
#include <vector>
#include <random>
#include <string>

const char charset[] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','8','9'};
int main()
{

    std::cout << "Please enter the number of passwords to generate here: ";
    int num_pass;
    std::cin >> num_pass;
    std::random_device dev;
    std::mt19937_64 rng(dev());
    std::vector<std::string> passwds;
    std::uniform_int_distribution<std::mt19937_64::result_type> dist(0, sizeof(charset) - 1);

    for (int i = 0; i < num_pass; ++i) {
        std::string pass = "";
        int num_nums = 0, num_chars = 0;
        while (pass.length() < 10) {
            char c = charset[dist(rng)];
            if (isdigit(c) && num_nums < 6) {
                pass += c;
                num_nums++;
            }
            else if (isalpha(c) && num_chars < 6) {
                pass += c;
                num_chars++;
            }
        }
        passwds.push_back(pass);
        std::cout << pass << std::endl;
    }
    std::cin.get();
}
```