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DOS学习入门 & 精彩文章（教学室） » What is the difference between `for %i` and `for %a`?

Floor16　SinLow	Posted 2009-09-17 13:03
初级用户　Posts 33　Credits 70
In the English 26 letters, In FOR, they are all variables, and there is no difference.

Floor17　redrains	Posted 2009-09-20 13:32
初级用户　Posts 26　Credits 49
What does the following "echo %+/%,/%-" mean? Originally posted by lxmxn at 2008-1-6 12:48 AM: There are definitely more than 26 symbols: for /f "tokens=1,3,4" %+ in ("hello world batch fans") do @echo %+/%,/%- What does the following "echo %+/%,/%-" mean?

Floor18　terrywhut	Posted 2009-10-17 14:26
新手上路　Posts 3　Credits 8
Originally posted by zhxy9804 at 2008-11-11 13:47: Can you explain the meaning of the code on the seventh floor? I don't understand it, thank you! :( Code on the seventh floor for /f "tokens=1,3,4" %+ in ("hello world batch fans") do @echo %+/%,/%- Read "hello world batch fans", split into individual tokens according to the space (default) delimiter, take the 1st, 3rd, and 4th tokens, and assign them to %+ %, %- respectively (because according to ASCII code values, 43 corresponds to +, 44 corresponds to ,, 45 corresponds to -). So %+ is hello %, is batch %- is fans The final result is hello/batch/fans

Floor23　f319	Posted 2009-11-10 01:02
新手上路　Posts 9　Credits 14
Learned, it seems that it should be done in ascending order of ASCII. As for the statement that there are only 26 letters, I have also seen it, maybe it's a problem with different Windows versions.

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