how can i separate the lat long and altitude from gps in code ?

Where do you get the raw data? That is, which format is it?

If you want to parse standard NMEA strings coming from a GPS module then you can use this library written by our fellow @Tilen MAJERLE​ - https://github.com/MaJerle/GPS_NMEA_parser

Or use any other NMEA parser library which suits your needs, there are many of them.

I am getting the data as per the NMEA format and now my task is to get the only lat long and altitude and UTC time from that for that i need a code please share it.

Isn't this a simple parsing task​? I've posted multiple examples here over the years.

And I wouldn't consider NMEA as "raw".