View Compilation Error

0_0_13757724_2371.cpp:1:1: error: 'var' does not name a type
 var
 ^
0_0_13757724_2371.cpp:3:1: error: 'begin' does not name a type
 begin
 ^
0_0_13757724_2371.cpp:7:7: error: 's' does not name a type
       s:=0;
       ^
0_0_13757724_2371.cpp:8:7: error: expected unqualified-id before 'for'
       for i:=1 to n do
       ^
0_0_13757724_2371.cpp:12:16: error: expected constructor, destructor, or type conversion before '(' token
             inc(sum);
                ^
0_0_13757724_2371.cpp:13:11: error: 'end' does not name a type
           end;
           ^
0_0_13757724_2371.cpp:14:9: error: 'readln' does not name a type
         readln;
         ^
0_0_13757724_2371.cpp:15:14: error: expected constructor, destructor, or type conversion before '(' token
       writeln(sum+2*n);
              ^
0_0_13757724_2371.cpp:16:5: error: 'end' does not name a type
     end;
     ^
0_0_13757724_2371.cpp:17:1: error: 'end' does not name a type
 end.
 ^