James is responsible for a computer used by several people at his work. He is concerned that these people who are computer illiterate might accidentally format the hard drive.
To prevent this happening he has changed the name of Format.com to frmt.com .
He now needs to write a batch file named Format.bat that will ony allow the user to format dirve A: or B:.

Write the batch file for him ,saving it as Format.bat. It should accept a command line parameter, either A; or B:. If correct parameter is entered the batch file should call frmt.com amd commence formatting the floppy disk. If an incorrect command line parameter is entered or the parameter is missing then an appropriate error message should be displyed, advising the user about missing parameters and invalid drives.

Write a batch file called FMT.BAT that will perform an unconditional disk format to the density of the drive by reading the drive as a replaceable parameter. Include a check routine that wil prevent formatting anything but drive A: or B:, and produce appropriate screen prompts. Dont forget a prompt for missing parameters.

Heres the answer:
@echo off
cls
rem This is FMT.BAT
rem
if %1!==! goto prmt
if not %1==A: goto nope
if not %1==a: goto nope
if not %1==B: goto nope
if not %1==b: goto nope
echo.
echo format %1 /u
goto end
:nope
echo.
echo You cant format drive %1
goto end
rmt
echo.
echo Dont forget the drive letter and colon (such as A
:end