Program P54;
 { Simularea unui calculator de buzunar }
var a, b : real;
       c : char;
begin
 write('a='); readln(a);
 write('b='); readln(b);
 write('Cod operaýie  '); readln(c);
 case c of
     '+' : writeln('a+b=', a+b);
     '-' : writeln('a-b=', a-b);
     '*' : writeln('a*b=', a*b);
     '/' : writeln('a/b=', a/b);
     else  writeln('Cod operaţie necunoscut');
 end;
 readln;
end.