Update README.md

Author: ObedRav

pointers_arrays_strings/README.md

@@ -41,6 +41,13 @@ the differences between the two as well as how to use and manipulate strings in
 | `5-string_toupper.c` | `char *string_toupper(char *);`                                |
 | `6-cap_string.c`     | `char *cap_string(char *);`                                    |
 | `7-leet.c`           | `char *leet(char *);`                                          |
+| `0-memset.c` | `char *_memset(char *s, char b, unsigned int n);`       |
+| `1-memcpy.c` | `char *_memcpy(char *dest, char *src, unsigned int n);` |
+| `2-strchr.c` | `char *_strchr(char *s, char c);`                       |
+| `3-strspn.c` | `unsigned int _strspn(char *s, char *accept);`          |
+| `4-strpbrk.c` | `char *_strpbrk(char *s, char *accept);`               |
+| `5-strstr.c` | `char *_strstr(char *haystack, char *needle);`          |
+| `7-print_chessboard.c` | `void print_chessboard(char (*a)[8]);`        |
 
 ## Formatting and Examples :nerd_face:
 <details open>
@@ -174,3 +181,41 @@ julien@ubuntu:~/$
     * Letters `t` and `T` are replaced by `7`.
     * Letters `l` and `L` are replaced by `1`.
 
+<p align="center">
+ <img src= "https://s3.eu-west-3.amazonaws.com/hbtn.intranet.project.files/holbertonschool-low_level_programming/218/58fe6b229144b7fe5ebe88afe9ff5cabe2dd0863e1e79b2d02b4103c30b465dd.jpg">
+
+* **0. memset**
+  * [0-memset.c](./0-memset.c): C function that fills the first `n` bytes of
+  memory area pointed to by `s` with the constant byte `b`.
+    * Returns a pointer to the filled memory area `s`.
+
+* **1. memcpy**
+  * [1-memcpy.c](./1-memcpy.c): C function that copies `n` bytes from memory
+  area `src` to memory area `dest`.
+    * Returns a pointer to the memory area `dest`.
+
+* **2. strchr**
+  * [2-strchr.c](./2-strchr.c): C function that returns a pointer to the first occurence of
+  the character `c` in the string `s`.
+    * If the character is not found, the function returns `NULL`.
+
+* **3. strspn**
+  * [3-strspn.c](./3-strspn.c): C function that returns the number of bytes in the intitial
+  segment of memory area `s` which consist only of bytes from a substring `accept`.
+
+* **4. strpbrk**
+  * [4-strpbrk.c](./4-strpbrk.c): C function that locates the first occurence in a
+  string `s` of any of the bytes in a string `accept`.
+    * Returns a pointer to the byte in `s` that matches one of the bytes in `accept`.
+    * If no matching byte is found, the function returns `NULL`.
+
+* **5. strstr**
+  * [5-strstr.c](./5-strstr.c): C function that finds the first occurence of a
+  substring `needle` in a string `haystack`.
+    * The terminating null bytes (`\0`) are not compared.
+    * Returns a pointer to the beginning of the located substring.
+    * If the substring is not found, the function returns `NULL`.
+
+* **6. Chess is mental torture**
+  * [7-print_chessboard.c](./7-print_chessboard.c): C function that prints the chessboard.
+