Hello I've been using "Zip Utils" from http://www.codeproject.com/Articles/7530/Zip-Utils-clean-elegant-simple-C-Win32

to zip files and folders. the easy thing is if the file name is known i just need to do something like this

HZIP hz; DWORD writ;
hz = CreateZip(_T("filename\\image1.zip"),0);

The problem is I get errors when trying to zip files by incrementing file names within a loop

    int i= 0;
for(i=0; i<record; i++)
{
     ZipAdd(hz,_T("doc"+i+1+".kml"), _T("filename\\doc"+i+1+".kml"));
    }