string

include/string.h

void * memcpy(void *dest, void *src, size_t n);

void * memset(void *s, int c, size_t n);

void * memmove(void *dest, void *src, size_t n);

int memcmp(void *s1, void *s2, size_t n);

void * memchr(void *s, int c, size_t n);

void * memrchr(void *s, int c, size_t n);

size_t strlen(char *str);

char * strcpy(char *dest, char *src);

char * strcat(char *dest, char *src);

int strncmp(char *s1, char *s2, size_t n);

int strcmp(char *str1, char *str2);

char * strncpy(char *dest, char *src, size_t n);

char * strchr(char *s, int c);

char * strrchr(char *s, int c);

size_t strspn(char *s, char *accept);

size_t strcspn(char *s, char *reject);

char * strpbrk(char *s, char *accept);

char * strstr(char *haystack, char *needle);

char * strtok(char *str, char *delim);

char * strtok_r(char *str, char *delim, char **saveptr);

char * strncat(char *dest, char *src, size_t n);

size_t strnlen(char *s, size_t maxlen);

int islower(int c);

int isupper(int c);

int isdigit(int c);

int isalpha(int c);

int isalnum(int c);

int isspace(int c);

int isprint(int c);

int toupper(int c);

int tolower(int c);

char * strdup(char *str);

char * strndup(char *str, size_t n);

int strcasecmp(char *s1, char *s2);

int strncasecmp(char *s1, char *s2, size_t n);

char * strrev(char *s);

char * strtoupper(char *s);

char * strtolower(char *s);

int64_t atoi(char *str);

size_t atoui(char *str);

size_t atohex(char *str);

char * itoa(int64_t value, char *buf, int base);

char * utoa(size_t value, char *buf, int base);

long strtol(char *nptr, char **endptr, int base);

int vsnprintf(char *buffer, int buffer_len, char *format, va_list args);

int snprintf(char *buffer, int buffer_len, char *format);