#include "zfstream.h"intmain(){// Construct a stream object with this filebuffer. Anything sent// to this stream will go to standard out.gzofstreamos(1,ios::out);// This text is getting compressed and sent to stdout.// To prove this, run 'test | zcat'.os<<"Hello, Mommy"<<endl;os<<setcompressionlevel(Z_NO_COMPRESSION);os<<"hello, hello, hi, ho!"<<endl;setcompressionlevel(os,Z_DEFAULT_COMPRESSION)<<"I'm compressing again"<<endl;os.close();return0;}