SQL & PL/SQL

Hello,

i'm trying to write a procedure that takes a table name as input and uses a cursor to select a column,count(1) from the passed table to the cursor. The procedure i've come up with is as follows,

CREATE OR REPLACE
PROCEDURE excur(
    p_tbl user_tables.table_name%type )
AS
  type rc is ref cursor;
  c rc;
  res BOOLEAN;
BEGIN
  open c for 'SELECT columnA,COUNT(1) FROM'|| p_tbl||';';
  close c;
END excur;

When i try to execute it, an error pops up informing that a table cannot be used in this context. As in i cannot pass a table name as an argument to a procedure. Kindly guide as to how to solve this situation.