View Compilation Error

0_0_14875378_17887.cpp:1:1: error: 'program' does not name a type
 program hdu2001;
 ^
0_0_14875378_17887.cpp:2:1: error: 'var' does not name a type
 var
 ^
0_0_14875378_17887.cpp:4:1: error: 'begin' does not name a type
 begin
 ^
0_0_14875378_17887.cpp:8:5: error: 'd' does not name a type
     d:=sqrt((x1-x2)*(y1-y2)+(y1-y2)*(y1-y2));
     ^
0_0_14875378_17887.cpp:9:12: error: expected constructor, destructor, or type conversion before '(' token
     writeln(d:0:2);
            ^
0_0_14875378_17887.cpp:10:3: error: 'end' does not name a type
   end;
   ^
0_0_14875378_17887.cpp:11:1: error: 'end' does not name a type
 end.
 ^