Exception Handling & File I/O - Practice

#include <iostream>
#include <fstream>
#include <sstream>
using namespace std;

int main() {
    // Write to file
    ofstream out("output.txt");
    out << "Line 1" << endl;
    out << "Line 2" << endl;
    out.close();
    
    // Read from file
    ifstream in("output.txt");
    string line;
    while (getline(in, line))
        cout << "Read: " << line << endl;
    in.close();
    
    // String stream
    stringstream ss;
    ss << "Number: " << 42 << " Pi: " << 3.14;
    cout << ss.str() << endl;
    return 0;
}