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Plain Char #2 2 44 (3/2/2004 10:46:33 AM) comp.lang.c In a post regarding toupper(), Richard Heathfield once asked me to think about what the conversion of a char to unsigned char would mean, and whether it was sensible to actually do so. And pete has raised a dou... Peter

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A binary search algorithm that searches for an element similar to the key 57 48 (12/20/2011 11:13:05 PM) comp.lang.c I want to write the function binsearch_low() with the same interface of bsearch() standard function: void * binsearch_low (const void *key, const void *array, size_t count, size_t size, comparison_fn_t compa... pozzugno (150)

RELATION BETWEEN OPERATORS 8 36 (1/15/2012 9:54:57 AM) comp.lang.c HI FRIENDS,SOMEWHERE i have Seen that Expressions (x%8) and (x&7) in C , are equivalent.. that is if i write a program like int main () { int x=50; printf("%d\n", x%8); printf("%d\n", x&7); return 0... imehta285 (3)

C arithmetic question. 60 54 (1/18/2012 6:32:57 PM) comp.lang.c $cat hunh.c #include int main(void) { long int a = -58; unsigned long int b = 37; a %= b; printf("%ld\n", a); return 0; } $cc -std=c99 -Wall -pedantic -o hunh hunh.c $./hunh 23 ... rubrum (243)

variable length permutation code 5 38 (1/28/2012 9:03:02 PM) comp.lang.c I have code that will take a string and generate the permutations of the string. i.e. the string is abc: abc acb bac bca cab cba What I would like is to modify it so it can produce: a b c ab ac ba bc ca cb a... rhyes80 (3)

trigraphs, yecch 46 33 (1/31/2012 3:55:41 PM) comp.lang.c The other day I wanted to put three successive question marks in a string. Frex, "(???).%s.%s". My trusty antique gcc compiler converted the last two '?'s into a ']' along with a warning that it was doing a ... cri (1432)

Function Prototypes: Necessary or just good practice? 16 30 (2/14/2012 5:05:50 AM) comp.lang.c In K&R2, function definitions in a program were preceded by a function prototype, i.e.: int my_function(int variable1, int variable2); Then somewhere down the line is the actual definition of the function i... blahbleh6661 (3)

Which operation is more expensive?(a <= b and a != 0) #2 30 30 (2/27/2012 9:24:52 PM) comp.lang.c From a web-site that teaches optimization for c, I saw bellow optimization rule. int fact1_func (int n) { int i, fact = 1; for (i = 1; i <= n; i++) fact *= i; return(... nospam21 (11322)

multiple token merging in macro expansions 4 24 (4/3/2012 3:23:51 PM) comp.lang.c Hello all, I must have a brain fart as I can't get this to work: #define VAR(A,B) VAR_##A_##B int i=VAR(SOME,THING); I want it to expand to VAR_SOME_THING but actually expands to VAR_A_THING I've seen example... use_the_contact_form (64)

working with big numbers 26 54 (5/13/2012 3:42:42 PM) comp.lang.c Dear Friends, i need to know how to calculate big numbers i.e. factorial of 100. i google and found a solution but didn`t understand how it is done.and some others solution is using some library .but i actual... ashishmourya21 (34)

Checksum in a struct 37 56 (7/11/2012 2:56:53 PM) comp.lang.c I have a function that computes a 16-bit checksum (following whatever algorithm) of a memory space: unsigned int checksum(const void *buffer, size_t size); I want to embed this checksum in a struct: ... pozzugno (150)