+/* Strings */
+extern size_t strlen(const char *string);
+extern size_t strnlen(const char *string, size_t maxlen);
+extern int strcmp(const char *str1, const char *str2);
+extern int strncmp(const char *str1, const char *str2, size_t maxlen);
+extern int strcasecmp(const char *s1, const char *s2);
+extern int strncasecmp(const char *s1, const char *s2, size_t maxlen);
+extern char *strcpy(char *dst, const char *src);
+extern char *strncpy(char *dst, const char *src, size_t num);
+extern char *strcat(char *dst, const char *src);
+extern char *strdup(const char *src);
+extern char *strndup(const char *src, int length);
+extern char *strchr(const char *str, int character);
+extern char *strrchr(const char *str, int character);
+extern char *strstr(const char *str1, const char *str2);
+extern size_t strcspn(const char *haystack, const char *reject);
+extern size_t strspn(const char *haystack, const char *accept);
+
+/* Memory */