SZ_VOIDSTRUCT
loc += SZ_VOIDSTRUCT;
while (fread((char *)&Enrgyvoid, SZ_VOIDSTRUCT, 1, Energyvoidfp) == 1)
loc += SZ_VOIDSTRUCT;
fread((char *)&Enrgyvoid, SZ_VOIDSTRUCT, 1, Energyvoidfp);
fwrite((char *)&Enrgyvoid, SZ_VOIDSTRUCT, 1, fp);
if ((loc = allocvoid()) > 20L * (long)SZ_VOIDSTRUCT)
fread((char *)&Enrgyvoid, SZ_VOIDSTRUCT, 1, Energyvoidfp);
fwrite((char *)vp, SZ_VOIDSTRUCT, 1, Energyvoidfp);
while (fread((char *)&Enrgyvoid, SZ_VOIDSTRUCT, 1, Energyvoidfp) == 1)
fwrite(&Enrgyvoid, SZ_VOIDSTRUCT, 1, fp);