백준 1212번 8진수 2진수

문제 링크입니다: https://www.acmicpc.net/problem/1212

간단한 진법 변환 문제였습니다.

#include <iostream>

#include <string>

using namespace std;

 

int main(void)

{

        ios_base::sync_with_stdio(0);

        cin.tie(0);

        string s;

        cin >> s;

 

        //0인 경우

        if (s == "0")

        {

                 cout << "0\n";

                 return 0;

        }

 

        for (int i = 0; i<s.length(); i++)

        {

                 switch (s[i] - '0')

                 {

                 case 0:

                         cout << "000";

                         break;

                 case 1:

                         if (!i)

                                 cout << "1";

                         else

                                 cout << "001";

                         break;

                 case 2:

                         if (!i)

                                 cout << "10";

                         else

                                 cout << "010";

                         break;

                 case 3:

                         if (!i)

                                 cout << "11";

                         else

                                 cout << "011";

                         break;

                 case 4:

                         cout << "100";

                         break;

                 case 5:

                         cout << "101";

                         break;

                 case 6:

                         cout << "110";

                         break;

                 case 7:

                         cout << "111";

                         break;

                 }

        }

        cout << "\n";

        return 0;

}

개발환경:Visual Studio 2017

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