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1. F
2. W
3. F
Aufgabe 1.2
1. F
2. F
3. W
Aufgabe 2.1
a) Beginn des Programms!
b) javac: file not found: HelloVortrag.java
Usage: javac <options> <source files>
use -help for a list of possible options
Aufgabe 2.2
Lexikalische: Z3. = ou statt out
Syntaktische: Z1. = { fehlt
Z3. " um Text fehlen
Z3. ; am Ende fehlt
Semantische: /
Aufgabe 2.3
a) Variante 1 ohne, 2 mit Zeilenumbruch.
b) V1: To be or not to be?
V2: To be
or not
to be?
V3: To be or not to be?
V4: To be
or not to be?
Aufgabe 3.1
a),c),e)
Aufgabe 3.2
- int a;
- float b = 42;
- int c = 23;
- int g = c;
- double h = b;
- int i = b;
- int j = (int) b;
Aufgabe 3.3
MeinAlter muss meinAlter sein.
Aufgabe 3.4
42.5 ist keine ganze Zahl.
Aufgabe 3.5
c) Die Zahl springt wieder zurück auf den nächst kleinsten Wert und beginnt von dort an zu zählen.
public class HelloVortrag {
public static void main (String [] args) {
/* System.out.println("Hallo Vortrag!");
int V1 = 12;
int V2 = 6;
int V3 = V1/V2;
System.out.println("Das Ergebnis ist: "+V3+"!");
*/
/*
double pi = 3.14159;
float V4 = 120;
double V5 = pi*V4;
System.out.println(V5);
byte B1 = 127;
byte B2 = B1++;
System.out.println(B2);
*/
/*
String name = Input.readString();
System.out.println(name);
int geburtstag = Input.readInt();
System.out.println(geburtstag);
int geburtsmonat = Input.readInt();
System.out.println(geburtsmonat);
int geburtsjahr = Input.readInt();
System.out.println(geburtsjahr);
System.out.println(name+" hat am "+geburtstag+"."+geburtsmonat+"."+geburtsjahr+" Geburtstag!");
*/
/*
int p = -6;
int q = 5;
double formel = Math.sqrt(Math.pow(-p/2,2)-q);
double x1 = -p/2+formel;
double x2 = -p/2-formel;
System.out.println(x1+" , "+x2);
*/
int n = 100;
double zws = n*(n+1);
double sum = zws/2;
System.out.println(sum);
}
}
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