Added C/C++ book in Ukrainian (#7232)

* Update free-programming-books-uk.md

Added C/C++ book in Ukrainian

* Anchor to "C/C++" section has been fixed

Co-authored-by: Maksym Sitaylo <m.sitailo@sana-commerce.com>

books/free-programming-books-uk.md

@@ -1,5 +1,6 @@
 ### Index
 
+* [C and C++](#c-and-cpp)
 * [ClosureScript](#clojurescript)
 * [Haskell](#haskell)
 * [HTML and CSS](#html-and-css)
@@ -13,6 +14,11 @@
 * [Ruby](#ruby)
 
 
+### <a id="c-and-cpp"></a>C and C++
+
+* [С/C++ Теорія та практика](https://shron1.chtyvo.org.ua/Voitenko_Volodymyr C_Cpp_Teoriia_ta_praktyka.pdf) - Володимир Войтенко
+
+
 ### ClojureScript
 
 * [Розплутаний ClojureScript](https://lambdabooks.github.io/clojurescript-unraveled) - Роман Лютіков (LambdaBooks)