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What is controlled keyword in PL/1?
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Answer / sekhar naidu yandrapu
CONTROLLED SPECIFIES THAT YOU MAINTAIN FULL CONTROL OVER THE ALLOCATION AND FREEING OF STORAGE WITH ALLOCATE AND FREE STATEMENTS .MULTIPLE ALLOCATIONS OF THE SAME CONTROLLED VARIABLE IN THE SAME TASK ,WITHOUT INTERVENING FREEING , STACK
GENERATIONS OF THE VARIABLE.
eX: dcl fieldx char(12) controlled;
allocate fieldx;
fieldx ="all clear?';
put file(printer) edit(fieldx)(x(5),A)
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