Command prompt if statement questions

Ace1killa13

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Feb 27, 2015
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First of all sorry if this is not the right place to post this. But my questions are:
1. Is it possible to make an if statment in the command prompt to measure if a given variable is greater than one number and less than another.
2. This one doesn't have anything to do with if statments but is it possible to have the command.prompt open up an application window that it can edit? I ask because mg instructor told.me that the game quake was written in batch files.
 

Archaic59

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Jan 6, 2015
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Maybe this can help. Look at compare options.

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\>help if
Performs conditional processing in batch programs.

IF [NOT] ERRORLEVEL number command
IF [NOT] string1==string2 command
IF [NOT] EXIST filename command

NOT Specifies that Windows should carry out
the command only if the condition is false.

ERRORLEVEL number Specifies a true condition if the last program run
returned an exit code equal to or greater than the number specified.

string1==string2 Specifies a true condition if the specified text strings match.

EXIST filename Specifies a true condition if the specified filename exists.

command Specifies the command to carry out if the condition is
met. Command can be followed by ELSE command which
will execute the command after the ELSE keyword if the
specified condition is FALSE

The ELSE clause must occur on the same line as the command after the IF. For example:

IF EXIST filename. (
del filename.
) ELSE (
echo filename. missing.
)

The following would NOT work because the del command needs to be terminated
by a newline:

IF EXIST filename. del filename. ELSE echo filename. missing

Nor would the following work, since the ELSE command must be on the same line
as the end of the IF command:

IF EXIST filename. del filename.
ELSE echo filename. missing

The following would work if you want it all on one line:

IF EXIST filename. (del filename.) ELSE echo filename. missing

If Command Extensions are enabled IF changes as follows:

IF [/I] string1 compare-op string2 command
IF CMDEXTVERSION number command
IF DEFINED variable command

where compare-op may be one of:

EQU - equal
NEQ - not equal
LSS - less than
LEQ - less than or equal
GTR - greater than
GEQ - greater than or equal

and the /I switch, if specified, says to do case insensitive string
compares. The /I switch can also be used on the string1==string2 form
of IF. These comparisons are generic, in that if both string1 and
string2 are both comprised of all numeric digits, then the strings are
converted to numbers and a numeric comparison is performed.

The CMDEXTVERSION conditional works just like ERRORLEVEL, except it is
comparing against an internal version number associated with the Command
Extensions. The first version is 1. It will be incremented by one when
significant enhancements are added to the Command Extensions.
CMDEXTVERSION conditional is never true when Command Extensions are
disabled.

The DEFINED conditional works just like EXIST except it takes an
environment variable name and returns true if the environment variable
is defined.

%ERRORLEVEL% will expand into a string representation of
the current value of ERRORLEVEL, provided that there is not already
an environment variable with the name ERRORLEVEL, in which case you
will get its value instead. After running a program, the following
illustrates ERRORLEVEL use:

goto answer%ERRORLEVEL%
:answer0
echo Program had return code 0
:answer1
echo Program had return code 1

You can also use numerical comparisons above:

IF %ERRORLEVEL% LEQ 1 goto okay

%CMDCMDLINE% will expand into the original command line passed to
CMD.EXE prior to any processing by CMD.EXE, provided that there is not
already an environment variable with the name CMDCMDLINE, in which case
you will get its value instead.

%CMDEXTVERSION% will expand into a string representation of the
current value of CMDEXTVERSION, provided that there is not already
an environment variable with the name CMDEXTVERSION, in which case you
will get its value instead.
 

Ace1killa13

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Feb 27, 2015
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Yes I see what you are saying. Thanks, but do you have any ideas on my second question? I would like to be able to make my program look hetter than just the command line as well as being a little more user friendly.
 
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