If you might also want to play with putting the "WHILE..." line just before the REPEAT. This would be dependent upon your actual program (might need to consider if the loop starts with a failed condition). Your mileage may vary.
John Israel -----Original Message----- From: owner-u2-us...@listserver.u2ug.org [mailto:owner-u2-us...@listserver.u2ug.org] On Behalf Of George Gallen Sent: Friday, February 27, 2009 11:20 AM To: Ardent Subject: [U2] DO/WHILE vs IF THEN OK Aside from programming styles Is there any "functional" difference between WHILE expression DO and IF NOT(expression) THEN EXIT and UNTIL expression DO and IF expression THEN EXIT First I thought that the DO/WHILE would activate as soon as the condition occurred and drop out of a loop, but that is not the case, the condition has to be active AND control has to be back at the WHILE statement. Example: 0001: CTR=0 0002: LOOP 0003: CTR=CTR+1 0004: WHILE CTR<4 DO 0005: PRINT CTR 0006: CTR=CTR+1 0007: PRINT CTR 0008: CTR=CTR+1 0009: PRINT CTR 0010: CTR=CTR+1 0011: PRINT CTR 0012: CTR=CTR+1 0013: PRINT CTR 0014: CTR=CTR+1 0015: PRINT CTR 0016: CTR=CTR+1 0017: PRINT CTR 0018: REPEAT 0019: STOP 0020: END My first thought was that once CTR = 5, the loop would end (at LINE 12) but it didn't until control was passed back to LINE 4, then it ended. ------- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ ------- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
