C++ filesystem path composition

C++ filesystem path composition

Save as main.cpp and compile with a C++20 compiler, for example g++ -std=c++20 main.cpp -o example. The article states the minimum language version.

#include <filesystem>
#include <iostream>
int main() {
    std::filesystem::path output = std::filesystem::path("reports") / "summary.csv";
    std::cout << output.filename().string() << '\n';
    std::cout << output.extension().string() << '\n';
    std::cout << output.generic_string() << '\n';
}

1. Output: summary.csv, .csv, and reports/summary.csv. generic_string uses forward slashes for its textual representation.