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In C is “i+=1;” atomic?
原文: http://stackoverflow.com/questions/1790204/in-c-is-i-1-atomic/1790234#1790234=================================================================================================================转载 2012-09-27 21:22:25 · 1131 阅读 · 0 评论 -
What does the C ??!??! operator do?!
原帖: http://stackoverflow.com/questions/7825055/what-does-the-c-operator-do============================================================================================================================转载 2012-10-05 11:40:20 · 950 阅读 · 0 评论 -
Printing 1 to 1000 without loop or conditionals
原帖: http://stackoverflow.com/questions/4568645/printing-1-to-1000-without-loop-or-conditionals =======================================================================================================转载 2012-10-05 14:24:31 · 1416 阅读 · 0 评论 -
What is a typedef enum in Objective C?
原帖: http://stackoverflow.com/questions/707512/what-is-a-typedef-enum-in-objective-c===================================================================================================================转载 2012-10-04 18:23:28 · 1715 阅读 · 0 评论 -
What is “:-!!” in C code?
原文: http://stackoverflow.com/questions/9229601/what-is-in-c-code===============================================================================================================================I转载 2012-10-04 22:24:31 · 989 阅读 · 0 评论 -
Why does sizeof(x++) not increment x?
原帖: http://stackoverflow.com/questions/8225776/why-does-sizeofx-not-increment-x=======================================================================================================================转载 2012-10-04 22:54:06 · 1288 阅读 · 0 评论 -
Divide a number by 3 without using *, /, +, -, % operators
原帖: http://stackoverflow.com/questions/11694546/divide-a-number-by-3-without-using-operators==========================================================================================================转载 2012-10-04 19:42:07 · 1200 阅读 · 0 评论 -
crt0.o and crt1.o — What's the difference?
原帖: http://stackoverflow.com/questions/2709998/crt0-o-and-crt1-o-whats-the-difference=================================================================================================================转载 2012-10-02 11:26:34 · 2600 阅读 · 0 评论 -
How do you set, clear and toggle a single bit in C?
原帖: http://stackoverflow.com/questions/47981/how-do-you-set-clear-and-toggle-a-single-bit-in-c各种回答. 哈哈......学习了! ===================================================================================转载 2012-10-04 18:10:48 · 2053 阅读 · 0 评论 -
What is the difference between a definition and a declaration?
原帖: http://stackoverflow.com/questions/1410563/what-is-the-difference-between-a-definition-and-a-declaration==========================================================================================转载 2012-10-01 17:51:37 · 1247 阅读 · 0 评论 -
In C arrays why is this true? a[5] == 5[a]
原帖: http://stackoverflow.com/questions/381542/in-c-arrays-why-is-this-true-a5-5a======================================================================================================================转载 2012-10-01 19:32:19 · 1208 阅读 · 0 评论 -
Conversion from int16_t to uint32_t
int16_t s;uint32_t ui = s;Is the result of converting a int16_t value to a uint32_t value compiler dependent? If not, what's the rule?======================================================转载 2012-09-27 21:12:20 · 2054 阅读 · 0 评论 -
Do-While and if-else statements in C/C++ macros
原贴: http://stackoverflow.com/questions/154136/do-while-and-if-else-statements-in-c-c-macrosIn many C/C++ macros I'm seeing the code of the macro wrapped in what seems like a meaningless do w转载 2012-09-28 22:17:19 · 1509 阅读 · 0 评论 -
What should main() return in C/C++?
原帖: http://stackoverflow.com/questions/204476/what-should-main-return-in-c-c--------------------------------------------------------------------------------------------------------------------------转载 2012-09-28 22:21:52 · 1033 阅读 · 0 评论 -
Best way to detect integer overflow in C/C++
原帖: http://stackoverflow.com/questions/199333/best-way-to-detect-integer-overflow-in-c-c--------------------------------------------------------------------------------------------------------------转载 2012-09-28 22:30:21 · 2082 阅读 · 0 评论 -
Could anyone explain these undefined behaviors (i = i++ + ++i , i = i++, etc…)
原帖: http://stackoverflow.com/questions/949433/could-anyone-explain-these-undefined-behaviors-i-i-i-i-i-etc============================================================================================转载 2012-09-29 11:39:38 · 994 阅读 · 0 评论 -
why unsigned int 0xFFFFFFFF is equal to int -1?
原帖: http://stackoverflow.com/questions/1863153/why-unsigned-int-0xffffffff-is-equal-to-int-1==========================================================================================================转载 2012-09-29 13:08:22 · 1563 阅读 · 0 评论 -
Which variables should I typecast when doing math operations in C/C++?
原帖: http://stackoverflow.com/questions/245740/which-variables-should-i-typecast-when-doing-math-operations-in-c-c=====================================================================================转载 2012-09-29 13:21:41 · 1069 阅读 · 0 评论 -
What is the strict aliasing rule?
原帖: http://stackoverflow.com/questions/98650/what-is-the-strict-aliasing-rule=========================================================================================================================转载 2012-10-01 19:34:38 · 1191 阅读 · 0 评论 -
volatile 修饰的变量"副作用/序列点"问题
这个问题是因为这个帖子而起, 也是这段代码有点不明白. 和自己预期的值不一样, 所以就编译反汇编看了下.编译工具: Code:blocks(GCC), CPU(Intel Core i3 32位), OS(windows 7 / 32bit).参考书籍: 深入理解计算机系统(Bryant & Hallaron)更多了解关于 volatile 可以参考: http://blog.cs原创 2012-09-29 12:24:39 · 1495 阅读 · 1 评论