Shapefile C Library V1.2

   Purpose

      The Shapefile C Library provides the ability to write simple C
      programs for reading, writing and updating (to a limited extent) ESRI
      Shapefiles, and the associated attribute file (.dbf).

   Documentation

      /usr/local/share/doc/shapelib/shapelib.html - General docs
      /usr/local/share/doc/shapelib/shp_api.html  - Shape (.SHP) File API
      /usr/local/share/doc/shapelib/dbg_api.html  - Attribute (.DBF) File API

Check Shapelib Homepage below:

WWW: http://shapelib.maptools.org/