compress.c

#include <stdio.h>
#include <string.h>
#include <zlib.h>

int main()
{
    const char * dat = "Hello world!";
    gzFile * f = (gzFile *)gzopen("archive.gz", "wb");
    gzwrite(f, dat, strlen(dat));
    gzclose(f);

    return 0;
}