:: First Program example:
A the very minimum, every program must use the reserved words 
program, begin and end.

Pascal variables must be announced at the beginning of a program 
and the reserved word program and before the reserved word begin.

Variables must be identified by type.

Example:
program FirstProgram;
var VariableA : integer;

begin
  VariableA := 2 + 2;
  writeln(VariableA);
end.