C++ "Nhị phân"

#include <iostream>
#include <stack>
using namespace std;

void convert(int m){
    if (m > 0){
        convert(m/2);
        cout << m%2;
    }
}

void binary_stk(int m){
    stack<int> s;
    while (m > 0){
        s.push(m%2);
        m = m/2;
    }
    while(!s.empty()){
        cout << s.top();
        s.pop();
    }
}

int main(){
    int m;
    cout << "m = ";
    cin >> m;
    convert (m); cout << endl;
    binary_stk (m);
}