string.h

   1 #include <stddef.h>
   2
   3 void *memcpy(void *dst, void *src, int n);
   4 void *memmove(void *dst, void *src, int n);
   5 void *memset(void *s, int v, int n);
   6 void *memchr(void *s, int c, int n);
   7 void *memrchr(void *s, int c, int n);
   8 int memcmp(char *s1, char *s2, int n);
   9
  10 char *strcpy(char *dst, char *src);
  11 char *strchr(char *s, int c);
  12 char *strrchr(char *s, int c);
  13 int strlen(char *s);
  14 int strcmp(char *s1, char *s2);
  15
  16 char *strncpy(char *d, char *s, int n);
  17 char *strcat(char *d, char *s);
  18 int strncmp(char *d, char *s, int n);
  19 char *strstr(char *s, char *r);