/in/foo.cc:1:1: error: 'var' does not name a type
 var a,b,c,d,x:real;
 ^~~
/in/foo.cc:3:1: error: 'begin' does not name a type
 begin
 ^~~~~
/in/foo.cc:7:1: error: 'x' does not name a type
 x:=-(sqrt(b)*c+sqrt(d)*a)/(sqrt(b)+sqrt(d));
 ^
/in/foo.cc:9:8: error: expected constructor, destructor, or type conversion before '(' token
 writeln(sqrt((x+a)*(x+a)+b)+sqrt((x+c)*(x+c)+d):0:3);
        ^
/in/foo.cc:11:1: error: 'end' does not name a type
 end.
 ^~~