CRE Programmer's Guide

CRE Services
Common Run-Time Environment (CRE) Programmer’s Guide—528146-004
2-32
Standard Output
time your program writes to standard output, the CRE discards the record and
indicates a successful write:
PARAM EXECUTION-LOG *
RUN myprog / OUT $TERM, ..... /
•
The name of your program’s home terminal and you specify the program’s home
terminal as the EXECUTION-LOG, the CRE uses the file you specify for the
EXECUTION-LOG as standard output.
If you start your program from a TACL command line or TACL macro, the OUTFILE in
the startup message is the name you specify in the TACL OUT parameter or, if you do
not specify an OUT parameter, then the name by which TACL knows your terminal.
If a program other than TACL starts your program, the OUTFILE in the startup
message contains whatever file name the other program specifies when it creates the
startup message.
Note. The CRE does not recognize a TACL ASSIGN for a logical file called STDOUT.
Figure 2-12. Establishing the File Name of Standard Output
213VST .VSD
Start
OUTFILE in
startup message
is home term
?
PARAM
EXECUTION-LOG
present
?
PARAM
EXECUTION-LOG
is
*
?
PARAM
EXECUTION-LOG
is file name
?
Error
yes yes
yes yes
yes
no no
no no
no
OUTFILE
in startup message
is blanks
?
Use OUTFILE from
startup message
No
OUTFILE
. Reads
from standard input
return end of file.
Use file name
specified in
EXECUTION-LOG