Program Calculette;
Var a, b : Real;
op : Char;
Begin
Readln (a) ;
Readln (op) ;
Readln (b) ;
Case op of
'+' : Writeln (a:3:2,' ',op,' ',b:3:2,' = ',a+b:3:2 ) ;
'-' : Writeln (a:3:2,' ',op,' ',b:3:2,' = ',a-b:3:2) ;
'*' : Writeln (a:3:2,' ',op,' ',b:3:2,' = ',a*b:3:2) ;
'/' : IF b = 0 Then Writeln ('impossible') Else Writeln (a:3:2,' ',op,' ',b:3:2,' = ',a/b:3:2);
Else Writeln ('Opérateur incorrect');
End;
End.
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