C++中gzip压缩的示例代码有哪些

1. 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; } 

2. 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。