View Compilation Error

0_0_30518677_28378.cpp:1:1: error: 'var' does not name a type
 var a,b:longint;
 ^
0_0_30518677_28378.cpp:2:1: error: 'begin' does not name a type
 begin
 ^
0_0_30518677_28378.cpp:6:10: error: expected constructor, destructor, or type conversion before '(' token
   writeln(a+b);
          ^
0_0_30518677_28378.cpp:7:2: error: 'end' does not name a type
  end;
  ^
0_0_30518677_28378.cpp:8:1: error: 'end' does not name a type
 end.
 ^