View Compilation Error

0_0_13983940_18768.cpp:1:1: error: 'var' does not name a type
 var a,b:longint;
 ^
0_0_13983940_18768.cpp:2:1: error: 'begin' does not name a type
 begin
 ^
0_0_13983940_18768.cpp:6:15: error: expected constructor, destructor, or type conversion before '(' token
        writeln(a+b);
               ^
0_0_13983940_18768.cpp:7:4: error: 'end' does not name a type
    end;
    ^
0_0_13983940_18768.cpp:8:1: error: 'end' does not name a type
 end.
 ^