// 重载运算符
#include <iostream>
#include <cstring>
#include <cstdlib>

using namespace std;

class Num
{
private:
    int n;

public:
    explicit Num(int n) : n(n)
    {
    }
    bool operator>(int other)
    {
        return this->n > other;
    }
    bool operator<(int other)
    {
        return this->n < other;
    }
    bool operator>(Num &other)
    {
        return this->n > other.n;
    }
    bool operator<(Num &other)
    {
        return this->n < other.n;
    }
};

int main(int argc, char const *argv[])
{
    Num n1(atoi(argv[1])), n2(atoi(argv[2]));
    if (n1 > 20)
    {
        cout << "n1 大于 20" << endl;

        if (n1 < n2)
        {
            cout << "n1 小于 n2" << endl;
        }
    }
    if (n1 > n2)
    {
        cout << "n1 大于 n2" << endl;
    }
    return 0;
}