The Year 2038 Bug Tuesday, January 19, 2038, GMT 03:14:07 The counter will overflow and go to negative numbers Proposed solution: use 64-bits numbers - moves the problem to Sunday, December 4 th , year 292 277 026 596 - would be a total solut...
Trigraph sequences The characters in C source: 7-bit ASCII Some character sets don 't cover ASCII For reduced sets: trigraph sequences Replaced by the corresponding single character Replacement occurs before any other processing ??= # ??( [ ?? } ??' ^ ??! | ??- ~ Replacement occurs befo...
Strcat char *strcat(char *dest, const char *src); strcat appends a copy of src to the end of dest The length of the resulting string is strlen(dest) + strlen(src) strcat returns a pointer to the concatenated Strings #include #include int...
Strchr char *strchr(const char *s, int c); Scans a string for the first occurence of a given character The null-terminator is considered to be part of the string If c does not occur in s, returns NULL #include #include int main() { char string[20]; char *ptr, c = 'r'; strcpy(string, "...
Strcmp int strcmp(const char *s1, const char*s2); strcmp performs an unsigned comparison of s1 to s2 Returned value: - 0 if s1 s2 #include #include int main() { char *buf1 = "alice", *buf2 = "andrew"; int p; p = strcmp(buf2, buf1); if (p 0)
Strcpy char *strcpy(char *dest, const char *src); Copies string src to dest - (order of arguments: like in an assignment ”dest=src”) #include #include int main() { char string[10]; /* long enough to hold a copy of str1 */ char *str1 = "first"; strcpy(string, str1);
Strpbrk char *strpbrk(const char *s1, const char *s2); strpbrk scans a string, s1, for the first occurrence of any character appearing in s2 On success, strpbrk returns a pointer to the first occurrence of any of the characters in s2 If no...
Strtok char *strtok(char *s1, const char *s2); strtok considers the string s1 to consist of a sequence of zero or more text tokens, separated by spans of one or more characters from the separator string s2 The first call to strtok - returns a po...
Summary of functions operating on raw memory memccpy copies a block of n bytes from src to dest memcpy copies a block of n bytes from src to dest memmove copies a block of n bytes from src to dest memchr searches the first n bytes of array ...
Inserting a new element: int insert(bn *p, bn **root) { if (*root && (*root)-data == p-data) return 1; /* already present */ if (!*root) { /* empty tree */ *root = p; return 0; } else if (p-data (*root)-data) insert(p,&((*root)-right)); else insert(p,&((*root)-left)); return 0; } i...
