China DOS Union

It's almost New Year, little brother presents the calendar. If there are better, more convenient and simpler methods, please discuss.
There are any improper places in the code, everyone is welcome to criticize............
Wish: Happy New Year, all the best. Good luck in everything in the Year of the Pig!!
@echo off mode con: lines=12 cols=40 setlocal enabledelayedexpansion for %%a in (一,二,三,四,五,六,日) do ( set /a a+=1 set j!a!=%%a) for %%b in (31,28,31,30,31,30,31,31,30,31,30,31) do ( set /a y+=1 set s!y!=%%b) set /p m=Which month to check? cls set n=%m% set /a n-=1 for /l %%c in (1,1,%n%) do ( set /a day+=!s%%c!) set b=0 for /l %%d in (1,1,!day!) do ( set /a b+=1 if !b! equ 8 set b=1) if %m% equ 1 set b=7 echo 一 二 三 四 五 六 日 echo. set flag= 一二三四五六日一二三四五六日 for /l %%f in (1 1 13) do ( if "!flag:~%%f,1!"=="!j%b%!" ( if "!j%%f!"=="一" (set /p s= <nul&set zh=6&goto next) if "!j%%f!"=="二" (set /p s= <nul&set zh=5&goto next) if "!j%%f!"=="三" (set /p s= <nul&set zh=4&goto next) if "!j%%f!"=="四" (set /p s= <nul&set zh=3&goto next) if "!j%%f!"=="五" (set /p s= <nul&set zh=2&goto next) if "!j%%f!"=="六" (set /p s= <nul&set zh=1&goto next) if "!j%%f!"=="日" (set /p s=<nul&set zh=7&goto next) )) :next for /l %%e in (1 1 !s%m%!) do ( set /a b+=1 if !b! equ 8 set b=1 if %%e lss 10 (set /p= %%e<nul) else (set /p= %%e<nul) if !fl!==0 (set /a z+=1) if !z!==7 (echo.&set z=0) if %%e==!zh! (echo. set fl=0 ) ) pause>nul

[ Last edited by huzixuan on 2007-2-21 at 10:49 PM ]

Adding the year would be even more perfect...

Because I am still in the stage of learning to fly and cannot yet achieve more complex functions, so I still need the help of brothers to complete it.

for %%b in (31,28,31,30,31,30,31,31,30,31,30,31) do (

Is February always 28 days?

Isn't it from 2007;) And I really want to write something that works for many years, but I don't know how....

[ Last edited by huzixuan on 2007-2-17 at 01:00 AM ]

In batch scripting, the exclamation marks are used for delayed expansion. When delayed expansion is enabled, variables within loops or conditional blocks can be accessed correctly as their values change during execution. Without delayed expansion, the old value of the variable would be used instead. So in this context, the exclamation marks are related to enabling and using delayed variable expansion in the batch code.

Oh, my poor little calendar has sunk to the bottom of the sea without getting more people's encouragement.....

Thanks to the brother's encouragement, especially to brother redtek. Although not appearing, I know that the brother has always been helping us.

set j!a!=%%a
I don't quite understand this sentence. I wonder if the LZ can explain it.

Originally posted by juventusryp at 2007-2-18 08:25 PM:
I don't quite understand this line "set j!a!=%%a". I wonder if the LZ can explain it.

With everyone's help, I finally understand!!!

setlocal enabledelayedexpansion

set /?

......
When considering the current expansion limitations encountered when reading a line of text, delayed environment variable expansion is useful, not at execution time. The following example illustrates the problem with direct variable expansion:

set VAR=before
if "%VAR%" == "before" (
set VAR=after
if "%VAR%" == "after" @echo If you see this, it worked
)

No message will be displayed because when the first IF statement is read, %VAR% in BOTH IF statements will be substituted; the reason is: it contains the style of IF, and IF is a compound statement. So the IF in the compound statement is actually comparing "before" and "after", which will never be equal. Similarly, the following example will not achieve the expected effect:

set LIST=
for %i in (*.txt) do set LIST=%LIST% %i
echo %LIST%

The reason is that it will not create a file list in the current directory, but just set the LIST variable to the last file found. This is also because %LIST% is only expanded once when the FOR statement is read; and at that time, the LIST variable is empty. Therefore, the FOR loop we are really executing is:

for %i in (*) do set LIST= %i

This loop continues to set LIST to the last file found.

Delayed environment variable expansion allows you to use a different character (!) to expand environment variables at execution time. If delayed variable expansion is enabled, the above example can be written as follows to achieve the expected effect:

set VAR=before
if "%VAR%" == "before" (
set VAR=after
if "!VAR!" == "after" @echo If you see this, it worked
)

set LIST=
for %i in (*.txt) do set LIST=!LIST! %i
echo %LIST%
......

Brother on the 13th floor explained it very clearly. I've always used it this way, but I can't clearly explain what this means!

It's really an exciting thing to get the encouragement from the moderator!