#include <string>   // std::string
#include <iostream> // std::cout
#include <sstream>  // std::stringstream

int main() {
    std::string expected = "This is a test that prints to stdout";

    std::stringstream buffer;
    // Redirect std::cout to buffer
    std::streambuf* prevcoutbuf = std::cout.rdbuf(buffer.rdbuf());

    // BEGIN: Code being tested
    std::cout << "This is a test that prints to stdout" << std::endl;
    // END:   Code being tested

    // Use the string value of buffer to compare against expected output
    std::string text = buffer.str();
    int result = text.compare(expected);

    // Restore original buffer before exiting
    std::cout.rdbuf(prevcoutbuf);

    if (!result) {
        std::cout << "Failed" << std::endl;
        std::exit(1);
    }
    std::cout << "Success" << std::endl;
    std::exit(0);
}