Update files

include/string.h

@@ -0,0 +1,33 @@
+#pragma once
+#include <types.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+    int isdigit(int c);
+    int isspace(int c);
+    int isempty(char *str);
+    unsigned int isdelim(char c, char *delim);
+
+    void *memcpy(void *dest, const void *src, size_t n);
+    void *memset(void *dest, int data, size_t nbytes);
+    void *memmove(void *dest, const void *src, size_t n);
+    int memcmp(const void *vl, const void *vr, size_t n);
+    long unsigned strlen(const char s[]);
+    int strncmp(const char *s1, const char *s2, unsigned long n);
+    char *strcat(char *destination, const char *source);
+    char *strcpy(char *destination, const char *source);
+    char *strncpy(char *destination, const char *source, unsigned long num);
+    int strcmp(const char *l, const char *r);
+    char *strstr(const char *haystack, const char *needle);
+    char *strdup(const char *String);
+    char *strchr(const char *String, int Char);
+    char *strrchr(const char *String, int Char);
+    int strncasecmp(const char *lhs, const char *rhs, long unsigned int Count);
+    int strcasecmp(const char *lhs, const char *rhs);
+    char *strtok(char *src, const char *delim);
+
+#ifdef __cplusplus
+}
+#endif