PL/SQL Developer resolution of invalid statements

There is no error in the SQL statement itself, but PL /SQL Developer The resolution of the invalid statement.

This prompt appears because of the following code:

-- variable num: is an address value that holds the input value at that address ' Please enter a number ';

There is no error in the program itself, which is a problem with PL/SQL developer software. We can avoid this problem by writing a PL/SQL program using the Sqldeveloper tool.

The Sqldeveloper tool connects Oracle data and its operating procedures are as follows

For example, enter a 1

PL/SQL Developer resolution of invalid statements