(char *)(ASCB + 0x6C) is going to add 0x6c * 4 since ASCB is a pointer to integer, then that will be recast to a char *. (char *)ASCB + 06C will add 0x6c.
Define everything as unsigned char *, since that's what you're really pointing to. Then recast to int or whatever when and as actually used. -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Barkow, Eileen Sent: Thursday, February 08, 2018 11:14 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Silly C problem adding hex 6C I tried the simplest solution of casting ASXB to a CHAR * since I am not familiar with templates and basically got the same value as before. I will try some of the other solutions . Thanks everyone $ jn2 ASCB = FB7A00 ASXBC = FB7BB0 ******************** int *PSA; int *ASCB; int *ASXB=nullptr; char *ASXBC; char jobnameÝ9¨; PSA=(int *)0x224; /* address of PSAAOLD */ ASCB=(int *)*PSA; printf("ASCB = %X\n",ASCB); ASXBC= (char *)(ASCB + 0x6c); printf("ASXBC = %X\n",ASXBC); -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Paul Gilmartin Sent: Thursday, February 08, 2018 12:39 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Silly C problem adding hex 6C On Thu, 8 Feb 2018 10:22:40 -0600, Allan Kielstra wrote: >The size of a char in 1 byte. Try > >(char *) ASXB = (char *) ASCB + 0x6c; /* lazy version */ > ANSI says a cast may not be used as an L-value. IBM's C compiler enforces this. I once did something like (IIRC?): *(char * *) ASXB += 0x6c; My head hurts. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ________________________________ This e-mail, including any attachments, may be confidential, privileged or otherwise legally protected. It is intended only for the addressee. If you received this e-mail in error or from someone who was not authorized to send it to you, do not disseminate, copy or otherwise use this e-mail or its attachments. Please notify the sender immediately by reply e-mail and delete the e-mail from your system. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
