... #include <netcdf.h> ... /* Handle errors by printing an error message and exiting */ #define ERR(e) {printf("Error: %s\n", nc_strerror(e)); exit(ERRCODE);} ... /* netCDF file ID and variable ID */ int ncid, varid; /* array into which we will read values of 2D netCDF variable */ float rh_array[NLAT][NLON] ... /* Open the file with read-only access, indicated by NC_NOWRITE flag */ if ((retval = nc_open("foo.nc", NC_NOWRITE, &ncid))) ERR(retval); /* Get the id of the variable named "rh" */ if ((retval = nc_inq_varid(ncid, "rh", &varid))) ERR(retval); /* Read entire variable "rh" as floats, rh_array must be big enough! */ if ((retval = nc_get_var_float(ncid, varid, &rh_array[0][0]))) ERR(retval); /* Close the file, freeing all resources. */ if ((retval = nc_close(ncid))) ERR(retval); ...