八进制

#include<iostream>using namespace std;#include<vector>#include<algorithm>void test(){int num = 0;vector<int> arr;int key = 0;while(cin>>num){vector<int> arr;while(num > 0){key = num % 8;arr.push_back(key);num /= 8;}for(int i = arr.size()-1;i >= 0;i--){cout<<arr[i];}cout<<endl;}}int main(){test();return 0;}