Statement: Temporarily suspends program execution and lets you execute operating system commands during the suspension. The PAUSE statement is a deleted feature in Fortran 95; it was obsolescent in Fortran 90. Compaq Fortran fully supports features deleted in Fortran 95.
Syntax
Rules and Behavior
If you specify pause-code, the PAUSE statement displays the specified message and then displays the default prompt.
If you do not specify pause-code, the system displays the following default message:
FORTRAN PAUSE
The following prompt is then displayed:
Fortran Pause - Enter command<CR> or <CR> to continue.
PAUSE prompt>
The program waits for input on stdin
. If you enter
a blank line, execution resumes at the next executable statement.
Anything else is treated as a DOS command and is executed by a system( ) call. The program loops, letting you execute multiple DOS commands, until a blank line is entered. Execution then resumes at the next executable statement.
The effect of PAUSE differs depending on whether the program is an interactive or batch process, as follows:
In general, most other commands also terminate execution.
Effect on Tru64 UNIX and Linux Systems
The effect of PAUSE differs depending on whether the program is a foreground or background process, as follows:
Any other command terminates execution.
stdin
, as follows: stdin
is redirected from a file,
the system displays the following (after the pause code and
prompt):
To continue from background, execute 'kill -15 n'
In this message, n
is the process id of the
program.
stdin
is not redirected from a
file, the program becomes a suspended background job, and
you must specify fg
to bring the job into
the foreground. You can then enter a command to resume or
terminate processing. Compatibility
CONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIB
See Also: STOP, SYSTEM, Obsolescent and Deleted Language Features
Examples
The following examples show valid PAUSE statements:
PAUSE 701
PAUSE 'ERRONEOUS RESULT DETECTED'
The following shows another example:
CHARACTER*24 filename
PAUSE 'Enter DIR to see available files or press RETURN' &
&' if you already know filename.'
READ(*,'(A\)') filename
OPEN(1, FILE=filename)
. . .