How can I write the output to a compressed file (gz, bz2, ...) using fstream? It seems that Boost library can do that, but I am looking for a non Boost solution. I saw example only for reading from a compressed file.
To write compressed data to a file, you would run your uncompressed data through a compression library such as zlib (for DEFLATE, the compression algorithm used with .zip and .gz files) or xz utils (for LZMA, the compression algorithm used with 7zip and .xz files), then write the result as usual using ofstream or fwrite.