Why no output when PLSQL Anonymous block completes? [duplicate]

Answer 1

**SET SERVEROUTPUT ON;**
DECLARE
   a INTEGER :=10;
   b INTEGER :=20;
   c float ;
   d real ;

BEGIN
   c :=a+b;
   dbms_output.put_line('the value of C is :'|| c);
   d := 70.0/3.3;
   dbms_output.put_line('the value of d is:'|| d);
END;

This will give you the output

the value of C is: 30
the value of d is: 21.21212121212121212121212121212121212121