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Making use of %s in scanf without the need of an explcit area width opens a similar buffer overflow exploit that gets did; namely, if you will discover more characters while in the enter stream compared to the concentrate on buffer is sized to hold, scanf will happily publish Those people extra characters to memory outdoors the buffer, perhaps clobbering a thing important. Sadly, as opposed to in printf, You cannot provide the field with as being a run time argument:
@Ben This is an illustration of outter quotes, detect that /S does nothing at all in that situation Check out it pastebin.com/raw.
Earn badges by improving or inquiring thoughts in Staging Floor. See new badges What does %s and %d suggest in printf inside the C language? [closed]
char character; // merely a char one letter/from the ascii map character = 'a'; // assign 'a' to character
The primary difference lies in the best way it get's taken care of. Should you would've a gaggle of (for instance) 3 spaces instantly subsequent each other s+ can take that team and turns the whole it into a "", even though s would proces each individual space on its own.
The %s token makes it possible for me to insert (and most likely structure) a string. See which the %s token is changed by whichever I move on the string once the % image.
cnicutarcnicutar 182k2626 gold badges376376 silver badges398398 bronze badges Add a comment
All machine dependent code is written in assembly language.The assembly language differs for various processors.
Has any mass protest during the USA just after 1945 productively pressured The federal government to change its choice based on the protesters' needs? much more incredibly hot thoughts
So it is not taking away quotations get more info all around arguments; It really is possibly taking away quotes throughout the route on the EXE you're jogging, or across the full command line (or potentially around the 1st half on the command line, which might be bizarre).
code that will have to however pass through a pre-processor. Which means it can have #include things like and #define between other macros. It can also be penned as .sx.
Andrew HareAndrew Hare 351k7575 gold badges644644 silver badges640640 bronze badges 3 fifteen Be aware that this type of string interpolation is deprecated in favor of the more highly effective str.format system.
So what does /S Provide you with additional? Mainly it will save you from acquiring to worry about quoting the estimates. Additionally, it aids where you are Not sure irrespective of whether such as an environtment variable has quote people. Just say /S and put an additional quote originally and conclusion.
Even so x.replaceAll("s+", ""); will likely be more successful method of trimming Areas (if string might have a number of contiguous Areas) due to the fact of probably considerably less no of replacements thanks the to undeniable fact that regex s+ matches one or more spaces directly and replaces them with vacant string.
Is there some subtlety to /s that is eluding me? When would it at any time be needed? When would it even make any difference?