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> From: Leif Svalgaard > >From COBOL: > > GO TO AAA BBB CCC DEPENDING ON NNN Ah. An exception to every rule. GOTO ... DEPENDING can indeed be implemented as that messiest of instructions, the indexed GOTO. I consider an indexed GOTO a conditional GOTO, but it is indeed a loophole to my initial statement. There is no "condition"; the index itself determines the branch. Good catch. > or this horror: > > PERFORM PPP > ALTER PPP TO QQQ > PERFORM PPP > ALTER PPP TO SSS > PERFORM PPP > STOP RUN. > > PPP. > GO TO XXX. > > XXX. > DISPLAY "XXX". > > QQQ. > DISPLAY "QQQ". > > SSS. > DISPLAY "SSS". This one doesn't pass the test, though. The ALTER instruction is ugly, but doesn't do any conditional processing - that is, it always performs the same instructions regardless of program data. Therefore, in itself it cannot support, say, a DO WHILE loop. You would still have to have a way of conditionally executing the ALTER command. Joe
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