Question

I am acquainted that some folks have already written about this question; however, this question is not clear to me yet. I need to read gzipped files which contain unformatted data. I have unsuccessfully tried following instructions from zlib and gzstream sites. Could anybody provide me a quick example of how to extract data directly from the compressed gzip file using an ifstream? My procedure using dat files is the following:

#include <iostream>
#include <sstream>
#include <string>

int main () {
    ifstream file;
    string stringtemp;
    stringstream line2convert;
    file.open("directory/file.dat");
    // read each line using a for loop (I know the total number of lines)
    file.getline (line,100);
    // extract information line by line using stringstreams
    line2convert  << line;
    line2convert >> int2convert;   
    ...
    ...
    ...
} 

Anybody could give me a hint to add a few lines that I need?

Thanks!
– F

Answer 1

if you know how to link in gzstream, you can do that

just replace “ifstream” with “igzstream”

.