1 /* Copyright (c) 1979 Regents of the University of California */ 2 3 static char sccsid[] = "@(#)READC.c 1.1 10/30/80"; 4 5 #include "h00vars.h" 6 #include "h01errs.h" 7 8 char 9 READC(curfile) 10 11 register struct iorec *curfile; 12 { 13 char data; 14 15 if (curfile->funit & FWRITE) { 16 ERROR(EREADIT, curfile->pfname); 17 return; 18 } 19 IOSYNC(curfile); 20 if (curfile->funit & EOFF) { 21 ERROR(EPASTEOF, curfile->pfname); 22 return; 23 } 24 curfile->funit |= SYNC; 25 return *curfile->fileptr; 26 } 27