1program hello;
2
3var
4  st : string;
5
6procedure print_hello;
7begin
8 Writeln('Before assignment'); { set breakpoint 1 here }
9 st:='Hello, world!'; 
10 writeln(st); {set breakpoint 2 here }
11end;
12
13begin
14  print_hello;
15end. 
16