C++中gzip压缩的示例代码有哪些

使用zlib库进行gzip压缩的示例代码：

#include <iostream>#include <zlib.h>int main() {    const char *input_data = "Hello, World!";    uLong input_size = strlen(input_data) + 1;    uLong output_size = compressBound(input_size);    Bytef* output_data = new Bytef[output_size];    compress(output_data, &output_size, (Bytef*)input_data, input_size);    std::cout << "Compressed data: ";    for (uLong i = 0; i < output_size; i++) {        std::cout << output_data[i];    }    delete[] output_data;    return 0;}

使用Boost库进行gzip压缩的示例代码：

#include <iostream>#include <boost/iostreams/filtering_stream.hpp>#include <boost/iostreams/filter/gzip.hpp>#include <boost/iostreams/copy.hpp>int main() {    std::string input_data = "Hello, World!";    std::stringstream compressed_data;    boost::iostreams::filtering_ostream out;    out.push(boost::iostreams::gzip_compressor(boost::iostreams::gzip_params(boost::iostreams::gzip::best_compression)));    out.push(compressed_data);    out << input_data;    out.pop();    std::cout << "Compressed data: " << compressed_data.str() << std::endl;    return 0;}

这两个示例代码分别使用zlib库和Boost库实现了gzip压缩。可以根据实际需求选择合适的库进行使用。