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Case Anweisung

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Case Anweisung. Case <Selector> of Wert1:Anweisung1 Wert2:Anweisung2 ………………… Wertn:Anweisung n [Else Anweisung] End;. Beispiele:. Var i:integer; Begin readln(i); case i of 1:write(‘Einz’); 2:write(‘Zwei’); 3:write(‘Drei’);

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Case Anweisung

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  1. Case Anweisung Case <Selector> of Wert1:Anweisung1 Wert2:Anweisung2 ………………… Wertn:Anweisung n [Else Anweisung] End;

  2. Beispiele: Var i:integer; Begin readln(i); case i of 1:write(‘Einz’); 2:write(‘Zwei’); 3:write(‘Drei’); else write(‘Andere Zahl’); end; End.

  3. Wiederholungsanweisungen

  4. Welche sind diese? • Mit Abbruchsbedingung am Anfang • Mit Abbruchsbedingung am Ende • Mit Zahler

  5. In pascal: • While-Do • Repeat-Until • For-Do

  6. While- Do • Struktur While <Logischer Ausdruck> do Anweisung

  7. Beispiel S=1+2+3+4+5 Var s,i:integer; Begin s:=0; i:=1; while i<=5 do Begin s:=s+i; i:=i+1; end; write(s); End.

  8. Löst selbst! • S=1+2+…+n • S=1+1/2+…+1/n

  9. Repeat-until Struktur Repeat Anweisung Until <Logischer Ausdruck>

  10. Beispiel • S=1+2+3+4+5 Var s,i:integer; begin S:=0; i:=1; repeat s:=s+i; i:=i+1 until i>n; write(s) End.

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