View Compilation Error

0_0_18496300_18691.cpp:1:1: error: 'PROGRAM' does not name a type
 PROGRAM Calculate(input,output);
 ^
0_0_18496300_18691.cpp:2:1: error: 'VAR' does not name a type
 VAR
 ^
0_0_18496300_18691.cpp:4:1: error: 'BEGIN' does not name a type
 BEGIN
 ^
0_0_18496300_18691.cpp:6:1: error: 'c' does not name a type
 c:=a+b;
 ^
0_0_18496300_18691.cpp:7:8: error: expected constructor, destructor, or type conversion before '(' token
 writeln(c);
        ^
0_0_18496300_18691.cpp:8:1: error: 'END' does not name a type
 END.
 ^