Having problems trying to run a sql script using the command prompt.

Question

I place my script at the root c:
open run SQL Command Line.
I connected to the database using connet userid/password
Then I tried to execute the script by doing
@test_add_comments
I am getting the error message.
SQL> @test_add_comments
SP2-0310: unable to open file "test_add_comments.sql"
Am I suppose to place this sql somewhere else?
test_add_comments.sql is
COMMENT ON COLUMN myTable.ID IS 'Primary Key' ;
COMMENT ON COLUMN myTable.REVIEWLOG_ID IS 'REFERENCE TO SAFE REVIEW LOG TABLE' ;
COMMENT ON COLUMN myTable.FAC_ID IS 'REFERENCE TO ALL FACILITIES' ;
COMMENT ON COLUMN myTable.HALLBUILD_ID IS 'REFERENCE TO HALL BUILDING' ;

Answer 1

I figure it out.
open a sql worksheet and enter the falling commands in the run script.
@c:\your_script.sql
Execute it by clicking run script.