C++ equivalent of Python's os.makedirs(..., exist_ok=True)

In C++17, you can use std::filesystem which provides std::filesystem::create_directories.

Similar to Python’s os.makedirs(..., exist_ok=True) or the shell command mkdir -p, this will recursively create directories.

#include <iostream>
#include <filesystem>

namespace fs = std::filesystem;

int main() {
    std::string directoryPath = "output";

    try {
        // Create the directory
        fs::create_directories(directoryPath);
        std::cout << "Directory created successfully." << std::endl;
    } catch (const std::exception& ex) {
        std::cerr << "Error creating directory: " << ex.what() << std::endl;
    }

    return 0;
}

Note that you typically need to tell your compiler to use the C++17 standard. For example, for GCC use -std=c++17 or -std=gnu++17 in case you want to use GNU extensions

g++ -o main main.cpp -std=c++17

If you have to use an older compiler not supporting C++17 , you might need to use std::experimental::filesystem which basically provides the same API but in the std::experimental::filesystem namespace:

#include <iostream>
#include <experimental/filesystem>

namespace fs = std::experimental::filesystem;

int main() {
    std::string directoryPath = "output";

    try {
        // Create the directory
        fs::create_directories(directoryPath);
        std::cout << "Directory created successfully." << std::endl;
    } catch (const std::exception& ex) {
        std::cerr << "Error creating directory: " << ex.what() << std::endl;
    }

    return 0;
}