public class Calculator {
public static void main(String[] args){
int a = Integer.parseInt(args[0]);
int b = Integer.parseInt(args[1]);
String c = args[2];
if ("+".equals(c)){
int z = a + b;
System.out.println("das Ergebnis ist: " + z);
}else if ("-".equals(c)){
int z = a - b;
System.out.println("das Ergebnis ist: " + z);
}
}
}