Question { IGT, 22647 }

what is quasi-reentrant program?

Answer

before explaining reentrant programe let us consider an
interactive programe which will take input form user and
which will process the inputs and gives the output

in this interactive process control wil wait for user input
for a long time which means CPU will be idle

To avoid this senorio re entrant programes are designed
It will throw the map to user console and control will not
wait for user inputs and it will process other jobs
and when user give the input and he press the attention key
againg programe will be invoked with the user inputs and
the programe processes the input and it will show the
result on the console and then control will agian goes back
to some other jobs utill it got any input from the user

Question { 39092 }

If a field is declared as a comp-3 field and if we want to
sort a dataset based on this field, then how will the sort
card be???

e.g- if we want to sort by a field which is defined as a
PIC X(5) then we will mention - sort fields=(1,5,ch,a).
Likewise if a field is defined as PIC S9(10)COMP-3 then in
this case how will the sort field be defined (because in
this case a sign is also involved)???

Answer

Hi Albert,

I have a small doubt in your answer
for S9(10)COMP-3 the size will be 6 bytes
So I think it may be
sort fields=(1,6,PD,A)
Confirme weather my answer is right or wrong
Thanks in advance