// Sample program that prompts for an int and a double and that produces output
// files named using the int and double that have a list of primes.

#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <fstream>

using namespace std;

// returns a string version of the given int
string int_to_string(int n) {
    ostringstream out;
    out << n;
    return out.str();
}

// returns a string version of the given double
string double_to_string(double n) {
    ostringstream out;
    out << n;
    return out.str();
}

// returns a string version of the given vector as a comma-separated,
// bracketed, list
string vector_to_string(const vector<int> & v) {
    ostringstream out;
    out << "[";
    if (v.size() > 0) {
        out << v[0];
        for (int i = 1; i < v.size(); i++) {
            out << ", " << v[i];
        }
    }
    out << "]";
    return out.str();
}

int main() {
    vector<int> primes = {2, 3, 5, 7, 11};   // constructs vector with values

    cout << "give me an int: ";
    int n1;
    cin >> n1;
    cout << "give me a double: ";
    double n2;
    cin >> n2;
    
    ofstream out1(int_to_string(n1) + ".txt");
    ofstream out2(double_to_string(n2) + ".txt");
    out1 << "primes = " << vector_to_string(primes) << endl;
    primes.push_back(13);
    primes.push_back(17);
    out2 << "primes = " << vector_to_string(primes) << endl;

    return 0;
}