Not known Details About s
Not known Details About s
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includes quotation marks, then by default cmd will at times strip off All those estimates, and /s tells it to leave them by yourself.
Employing %s in scanf without having an explcit area width opens precisely the same buffer overflow exploit that will get did; particularly, if you'll find extra characters in the enter stream as opposed to goal buffer is sized to hold, scanf will Fortunately compose These further people to memory outside the house the buffer, perhaps clobbering something essential. Sad to say, in contrast to in printf, you can't provide the sphere with as a operate time argument:
If you always use /S, you can ignore the exception and just bear in mind the "typical" situation. The draw back is always that cmd.
* Results in fprintf to pad the output right until it truly is n characters large, where n can be an integer worth saved from the a perform argument just previous that represented via the modified variety.
And since your second parameter is vacant string "", there is absolutely no distinction between the output of two circumstances.
This way it could stand By itself. Furnishing an case in point which was equivalent to the instance while in the issue would also be a as well as.
@MichaelBurr: I am very read more guaranteed he just necessary the additional pair of quotations; the /s was redundant in this case, because the disorders less than which /s can make a distinction weren't achieved.
and so these information are certainly not similar to C code data files. Be aware that C information might be inlined with assembly Guidelines.
What I don't have an understanding of is in the event the quote removal would break something, for the reason that that is the only time /s ("suppress the default estimate-removing actions") could be required. It only eliminates offers under a certain arcane set of situations, and a kind of problems is that the to start with character once the /c must be a quotation mark.
Working with scanf Using the %s conversion specifier will quit scanning at the main whitespace character; by way of example, In case your enter stream appears like
To begin with you need to know that last output of each the statements will be identical i.e. to get rid of each of the Areas from provided string.
All I am aware is the fact cmd.exe's command parsing (Particularly with escaping figures) could be weird from time to time, so I have no doubt that /s is beneficial in at least 1 event.
This is most likely much more more likely to be fascinating within the scenario during the issue Michael Burr associated with, where cmd.exe is currently being released by CreateProcess as an alternative to from the batch file or even the command line itself..
The PEP will not say "supplanted" and in no Section of the PEP will it say the % operator is deprecated (nonetheless it does say other items are deprecated down the bottom). You may perhaps prefer str.format and that is great, but until there is a PEP saying it can be deprecated there is no sense in claiming it is actually when it's not.