But this isn't a "bug" in the algorithm given in the answer- that behavior is because functions likestrchrandstrlendo not accept alengthargument to bound the size of the search. Searchingchar bytes[1] = {0x55};, which for the purposes of our discussion just so happens to be placed at...
= NULL) { char *p = strchr(line, '\n'); if (p != NULL) { assert(*p == '\n'); *p = '\0'; // trim the newline } else { // haven't reached EOL yet. Read & discard the rest of the line. #define TRASH_LENGTH 1024 char trash[TRASH_LENGTH]; while((p = f...
The machine-level language is a language that consists of a set of instructions that are in the binary form 0 or 1. As we know that computers can understand only machine instructions, which are in binary digits, i.e., 0 and 1, so the instructions given to the computer can be only in...
One quirk of fgets is that it will store the trailing newline in the buffer if there's room, so you can do an easy check to see if someone typed in more input than you were expecting: char *newline = strchr( input, '\n' ); if ( !newline ) { // input longer than we expect...
http://www.strchr.com/hash_functions http://blog.aggregateknowledge.com/2011/12/05/choosing-a-good-hash-function-part-1/ http://blog.aggregateknowledge.com/2011/12/29/choosing-a-good-hash-function-part-2/ http://blog.aggregateknowledge.com/2012/02/02/choosing-a-good-hash-function-part-3...
A "better" alternative here is to use an input function like fgets() or fgetc() to read chunks of input, then scan it with sscanf() or parse it with string handling functions like strchr() and strtol(). Also see below for a specific problem with the "%s" conversion...
Update: My current optimal algorithm is as follows: For needles of length 1, use strchr. For needles of length 2-4, use machine words to compare 2-4 bytes at once as follows: Preload needle in a 16- or 32-bit integer with bitshifts and cycle old byte out/new bytes in from the ha...