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

int main(){

    string line = "1,2,3,4,5";

    while (line.find(",", 0) != string::npos){
        int comma_pos = line.find(",", 0);
        double value = atof(line.substr(0, comma_pos).c_str());

        cout << value << endl;

        line = line.substr(comma_pos + 1, line.size() - comma_pos - 1);
    }
    cout << atof(line.c_str()) << endl;

    return 0;
}