View Compilation Error

0_0_18314466_13704.cpp:1:1: error: 'var' does not name a type
 var
 ^
0_0_18314466_13704.cpp:3:1: error: 'begin' does not name a type
 begin
 ^
0_0_18314466_13704.cpp:5:2: error: 'ans' does not name a type
  ans:=a+b;
  ^
0_0_18314466_13704.cpp:6:8: error: expected constructor, destructor, or type conversion before '(' token
 writeln(ans);
        ^
0_0_18314466_13704.cpp:7:1: error: 'end' does not name a type
 end.
 ^