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What is the fastest substring search algorithm?

c algorithm string substring asked Jul 6 '10 at 4:58

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39 votes

Is &errno legal C?

c language-lawyer errno asked Oct 18 '12 at 0:35

stackoverflow.com

24 votes

Can sizeof(int) ever be 1 on a hosted implementation?

c asked Oct 5 '10 at 4:55

stackoverflow.com

23 votes

Is there a gcc option to assume all extern “C” functions cannot propagate exceptions?

c++ c gcc exception-handling asked Jan 14 '11 at 20:42

stackoverflow.com

23 votes

Why did POSIX mandate CHAR_BIT==8?

c posix asked Jul 8 '11 at 23:12

stackoverflow.com

23 votes

History of syscalls added to Linux?

c linux assembly syscall asked Jul 22 '11 at 23:14

stackoverflow.com

18 votes

Does INT_MIN % -1 produce undefined behavior?

c gcc overflow division modulo asked May 8 '11 at 1:19

stackoverflow.com

18 votes

Is there a known O(nm)-time/O(1)-space algorithm for POSIX filename matching (fnmatch)?

c regex string pattern-matching substring asked Apr 27 '12 at 0:50

stackoverflow.com

17 votes

Why does POSIX specify wctomb as non-thread-safe, but not mbtowc?

c thread-safety posix multibyte asked Jan 24 '11 at 17:55

stackoverflow.com

16 votes

How do you print the EXACT value of a floating point number?

c algorithm math floating-point asked Jul 9 '10 at 17:50

stackoverflow.com

Top Answers

212

How dangerous is it to compare floating point values?

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Why declare a struct that only contains an array in C?

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Can a near-zero floating value cause a divide-by-zero error?

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Was there a specific reason garbage collection was not designed for C?

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typedef fixed length array

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storing more than 2 power 31 on a 32-bit system

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In either C or C++, should I check pointer parameters against NULL/nullptr?

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What does “#define _GNU_SOURCE” imply?

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Check if user is root in C?

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convert string to integer sscanf or atoi

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why “++x || ++y && ++z” calculate “++x” firstly ? however,Operator “&&” is higher than “||”

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How could I temporary redirect stdout to a file in a C program?

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IEEE Std 754 Floating-Point: let t := a - b, does the standard guarantee that a == b + t?

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String-handling practices in C

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When is uint8_t ≠ unsigned char?

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Bit twiddling: which bit is set?

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c difference between malloc and calloc

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Why does the general program usually start at 0x8000?

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Embedded: memcpy/memset not used by most CRT startup code ― why?

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What is the purpose of the unary '+' operator in C?

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Are C functions guaranteed to have a fixed memory address?

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C style casting and readability in C++

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gcc: why the -lm flag is needed to link the math library?

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fwrite chokes on “<?xml version”

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Why doesn't a compiler optimize floating-point *2 into an exponent increment?

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Opaque C structs: how should they be declared?

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Understanding the different clocks of clock_gettime()

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What is this mysterious macro plus sign in stdint.h?

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How to prove that a=!!a is the shortest way to write a = (a == 0 ? 0 : 1);

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What kind of plug adapter should I pack for India?

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