When a data set is open for input or update, the current record number is the number of the next record to be read. When linenum specifies a record number earlier than the current record number in an open data set, the data set must be closed and reopened to reposition the current record number at linenum. When this situation occurs and the data set was not opened at the same task level as that of the executing exec, attempting to close the data set at a different task level results in an EXECIO error.
The linenum operand must not be used in this case. Specifying a value of zero 0 for linenum is equivalent to not specifying the linenum operand. Good programming practice, however, would be to explicitly close all data sets when finished with them. OPEN opens the specified data set if it is not already open.
STEM var-name the stem of the set of variables into which information is to be placed. To place information in compound variables, which allow for easy indexing, the var-name should end with a period. When var-name does not end with a period, the variable names are appended with numbers and can be accessed in a loop such as:.
To avoid confusion as to whether a residual stem variable value is meaningful, you may want to clear the entire stem variable prior to entering the EXECIO command. To clear all compound variables whose names begin with that stem, you can either:. SKIP reads the specified number of lines but does not place them on the data stack or in variables. When EXECIO writes an arbitrary number of lines from a list of compound variables, it stops when it reaches a null value or an uninitialized variable one that displays its own name.
The 0th variable has no effect on controlling the number of lines written from variables. DISKW opens a data set for output if it is not already open and writes the specified number of lines to the data set. The lines can be written from the data stack or, if the STEM operand is specified, from a list of variables. You can use the DISKW operand to write information to a different data set from the one opened for input, or to update, one line at a time, the same data set opened for update.
The lines value should be 1 when doing an update. For lines values greater than 1, each write updates the same record. STEM var-name the stem of the list of variables from which information is to be written. Add a trace to your program. Posted: Fri Aug 29, am.
Hello, Quote:. Posted: Fri Aug 29, pm. View previous topic :: :: View next topic. Similar Topics. Rexx to list generations of GDGs and Search file for records that don't fo To re-format the file using SORT card. Asked 1 year, 3 months ago. Active 1 year, 3 months ago. Viewed times. Improve this question. Fnechz Fnechz 6 6 bronze badges. You have answer, but here's a coding tip : if yuo think you want to change between SAY statements and QUEUE statements, create an output subroutine to which you pass a string to be output.
Then changing between output methods is quick and easy. That is insightful, thanks — Fnechz. Add a comment. Active Oldest Votes. Improve this answer. NicC NicC 1 1 silver badge 6 6 bronze badges. And indeed, this is the core of the problem.
Rich Jackson Rich Jackson 1 1 silver badge 5 5 bronze badges. You could remove that statement. Stephane34 Stephane34 21 2 2 bronze badges. I want the hline variable to appear on each division as typed above.
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