June 2010
Intermediate to advanced
900 pages
23h 11m
German
Content preview from Microsoft Access 2010 - Das Handbuch
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Operatoren
Operatoren dienen dazu, zwei Werte rechnerisch oder logisch miteinander zu verbinden. Im Zusammenhang mit Entscheidungen muss ein Programm analysieren können, ob beispielsweise ein Wert größer ist als der andere.
Mathematische Operatoren
Sicherlich die bekanntesten Operatoren sind die mathematischen Vergleichsoperatoren, wie sie in Tabelle 34.1 aufgelistet sind. Das Ergebnis eines solchen Vergleichs ist immer True oder False (für die Ergebnisse wird hier angenommen, dass intX den Wert 42 hat).
Tabelle 34.1 Mathematische Vergleichsoperatoren
Operator | Beispiel | Bedeutung | Ergebnis |
|---|---|---|---|
= |
| Gleich |
|
< |
| Kleiner als |
|
<= |
| Kleiner als oder gleich |
|
> |
| Größer als |
|
>= |
| Größer als oder gleich |
|
<> |
| Ungleich ... |
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