uva 10878 - Decode the tape

#include<iostream>

#include<cctype>

#include<cmath>

#include<cstring>

#include<algorithm>

using namespace std;

/*

每行'o'表示1，' '表示0，二进制转换为十进制是ASCII码

*/

int main(){

    string s;

    getline(cin,s);

    while(getline(cin,s)){

        if(s[0] == '_')

            break;

        int num = 0;

        for(int i = 2; i< s.length() - 1; i++){

            if(s[i] == 'o')

                num = num * 2 + 1;

            else if(s[i] == ' ')

                num = num * 2;

        }

        cout << (char)num;

    }



    return 0;

}