How to print unsigned char as 2-digit hex value in
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Iamtryingtoprintoutanunsignedcharvalueasa2-Digithexvalue,butalwaysgettingtheresultas4-Digithexvalue......
How to update command line output?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: InLinux,Whilestdouttocommandline,Iwanttoupdatespecificarea,suchastheapt-getoutput: 54%[Waitingforhea......
Why would C get stuck halfway through a while loop
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: WhenIcompileandrunthiscode(it'spartofamuchlargerprogram),Linuxgetshalfwaythroughthewhileloop,thensi......
Using C Preprocessing to get integer value of a st
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: HowwouldIcreateaCmacrotogettheintegervalueofastring?Thespecificuse-caseisfollowingonfromaquestion......
Is it possible to check whether you are building f
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Isthereasimplepreprocessormacrothatisdefinedfora64-bitbuild?Ithought_WIN64mighthavebeenit,butevenwh......
Unsigned char c = 255 is “11111111” or not?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Hereismyproblemcode: #include"stdio.h" intmain() { chara=-1; unsignedcharb=255; un......
How do one use `offsetof` to access a field in a s
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Let'ssupposeIhaveastructandextracttheoffsettoamember: structA{ intx; }; size_txoff=offsetof(A,x)......
What is the purpose of “-Wa,option” in GCC? [close
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: ...
Can a pointer to an incomplete type be incomplete?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Canint(*)[]beanincompletetype? C20186.2.51says: Atvariouspointswithinatranslationunitanobjecttype......
Optimising this C (AVR) code
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Ihaveaninterrupthandlerthatjustisn'trunningfastenoughforwhatIwanttodo.BasicallyI'musingittogenerate......
How can printf issue a compiler warning?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Iwaswonderinghowcanafunctionissueacompile-timewarning? Thiscametomymindbecausewhenwesupplywrongforma......
Why does the latency of the sqrtsd instruction cha
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: WellontheIntelintrinsicguideitisstatedthattheinstructioncalled"sqrtsd"hasalatencyof18cycles. Iteste......
Does accessing an int with a char * potentially ha
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Thecodebelowfortestingendiannessisexpectedtohaveimplementationdefinedbehavior: intis_little_endian(void){ ......
Undefined reference to fork() in Code::Blocks edit
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: WhenIamrunningbelowcodeinCode::BlocksinWindowsOS. Iusedtogetanerrorcalledundefinedreferencetofork(). ......
Is it legal to take the address of a function para
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: IsthiscodesnippetwelldefinedinANSIC? Onmysystem(Linuxx86_64)itseemstorunjustfineandprintanaddress,......
Function pointer to __attribute__((const)) functio
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: How(inGCC/"GNUC")doyoudeclareafunctionpointerwhichpointstoan__attribute__((const))function?Theideabeing......
Getting the cluster size of a hard drive (through
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Ineedtofindtheclustersizeoftheusersharddrive,throughCorC++.TheharddriveusesNTFS(thoughI'dappreciat......
Do unnamed bit-fields have well-defined semantics?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Isthefollowingcodeguaranteedtoterminatenormallyandsuccessfully? #include<assert.h> structfoo_s{ union{......
How does C17 want me to initialize my atomics?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: TheC17standarddeprecatesATOMIC_VAR_INITfromstdatomic.h,meaningitstillsupportsitbutwouldratheritnotbeuse......
Using sqrtf() in C: “undefined reference to `sqrtf
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: IamusingLinux,Ubuntu12.04(PrecisePangolin),andGeanyforcoding.ThecodeIamwritinginCworkedcompletelyfine......
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