백준 14491번: 9진수

https://www.acmicpc.net/problem/14491

1. 문제

진수 변환

2. 알고리즘

키워드 - 구현

3. 코드

#include <iostream>
#include <sstream>
#include <string>
#include <algorithm>
#include <functional>
#include <vector>
#include <list>
#include <queue>
#include <deque>
#include <map>
#include <set>
#include <stack>
#include <math.h>
 
using namespace std;
 
#define MAX_SIZE 100
#define INF 0x7fffffff
#define CENDL "\n"
#define ll long long
 
int main() {
 
    cin.tie(0);
    std::ios::sync_with_stdio(false);
    int n; cin >> n;
 
    int sol = 0; 
    int count = 0;
    while(n > 0) {
        sol += n % 9 * pow(10, count++);
        n /= 9;
    }
 
    cout << sol << CENDL;
 
    return 0;
}