sprintf deprecated

[sdarwin]

"Use snprintf if available as some compilers (clang 14.0) issue deprecation warnings for sprintf"

libs/graph/example/iohb.c:    sprintf(iformat,"%%%dd",Indwidth);
libs/graph/example/iohb.c:    sprintf(iformat,"%%%dd",Indwidth);
libs/graph/example/iohb.c:    sprintf(pformat,"%%%dd",Ptrwidth);
libs/graph/example/iohb.c:    sprintf(pformat,"%%%dd",Ptrwidth);
libs/graph/example/iohb.c:          sprintf(rformat,"%% %d.%dE",Rhswidth,Rhsprec);
libs/graph/example/iohb.c:          sprintf(rformat,"%% %d.%df",Rhswidth,Rhsprec);
libs/graph/example/iohb.c:       sprintf(rformat,"%%%ds",Rhswidth);
libs/graph/example/iohb.c:         sprintf(vformat,"%% %d.%dE",Valwidth,Valprec);
libs/graph/example/iohb.c:         sprintf(vformat,"%% %d.%df",Valwidth,Valprec);
libs/graph/example/iohb.c:      sprintf(vformat,"%%%ds",Valwidth);

[jeremy-murphy]

I just merged the fix for that one but I'll let you close it when you confirm that there are no other occurrences that need fixing.

[sdarwin]

" I'll let you close it"... Alright. Thanks. Those were the occurrences of sprintf.