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 [email protected] To unsubscribe please visit http://listserver.u2ug.org/
