Using input/output string streams for dynamic reading

string_streams.cpp

// Example program
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <exception>

using namespace std;

int main()
{       
    ostringstream output;

    try {
        output.exceptions(std::ios_base::failbit | std::ios_base::badbit);

        int a_int = 1;
        int a_bool = false;
        vector<string> a{"test", "test2"};
        
        output << a_int << endl;
        output << a.size() << endl;
        output << a[0] << endl;
        output << a[1] << endl;
        output << a_bool << endl;
        cout << output.str() << endl;
    } catch (const std::ios_base::failure& e) {
        std::cout << "Exception writing\n";
        return 1;
    }
    
    try {
        istringstream input(output.str());
        input.exceptions(std::ios_base::failbit | std::ios_base::badbit);
        int b_int;
        size_t b_size;
        vector<string> b;
        bool b_bool;
        input >> b_int;
        cout << b_int << endl;
        input >> b_size;
        cout << b_size << endl;
        b.resize(b_size);
        
        int test_exception;
        input >> test_exception; // exception here
        
        for (size_t i = 0; i < b_size; ++i) {
            string tmp;
            input >> tmp;
            b[i] = tmp;
            cout << tmp << endl;
        }
        
        input >> b_bool;
        cout << b_bool;
    } catch (const std::ios_base::failure& e) {
        std::cout << "Exception reading: " << e.what();
        return 1;
    }
    return 0;
}