diff --git a/05_Environmental/CMakeLists.txt b/05_Environmental/CMakeLists.txt
new file mode 100644
index 0000000..73fda69
--- /dev/null
+++ b/05_Environmental/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(Environmental)
+
+find_package(Curses REQUIRED)
+include_directories(${CURSES_INCLUDE_DIRS} )
+#set(PcreLibs "${PcreLibDir}${PcreCppLib}")
+
+#set(PcreIncludeDirs "${PcreSrcDir}" "${PcreLibDir}")
+
+
+add_executable(main main.c)
+target_link_libraries( main ${CURSES_LIBRARIES} )
+target_link_libraries( main pcre2-8)
+
diff --git a/05_Environmental/Readme.md b/05_Environmental/Readme.md
new file mode 100644
index 0000000..f1daa9f
--- /dev/null
+++ b/05_Environmental/Readme.md
@@ -0,0 +1,18 @@
+Для сборки без UTF поддержки:
+```
+mkdir build
+cd build
+cmake ..  && make
+```
+
+Для сборки с UTF поддержкой:
+```
+mkdir build
+cd build
+cmake .. -DCMAKE_CXX_FLAGS="$(CMAKE_CXX_FLAGS) -DPCRE2_UCP=1"  && make
+```
+
+Также работает
+```
+make clean
+```
diff --git a/05_Environmental/main.c b/05_Environmental/main.c
new file mode 100644
index 0000000..b2663ed
--- /dev/null
+++ b/05_Environmental/main.c
@@ -0,0 +1,106 @@
+#include <stdio.h>
+#include <string.h>
+
+#include <ncurses.h>
+
+#ifndef PCRE2_CODE_UNIT_WIDTH
+#define PCRE2_CODE_UNIT_WIDTH 8
+#endif
+#include <pcre2.h>
+
+#define DX 3
+#define ONLELINE 3
+#define MAXSTR 80
+
+void main() {
+    pcre2_code* re;
+    PCRE2_SPTR pattern; /* PCRE2_SPTR is a pointer to unsigned code units of */
+    PCRE2_SPTR subject; /* the appropriate width (in this case, 8 bits). */
+
+    int errnum;
+    int i, rc;
+
+    PCRE2_SIZE erroffs;
+    PCRE2_SIZE* ovector;
+    PCRE2_SIZE subject_length;
+
+    pcre2_match_data* match_data;
+
+    WINDOW *winA, *winB, *winO;
+    char inA[MAXSTR], inB[MAXSTR];
+    int c = 0;
+    int half;
+
+    initscr();
+    cbreak();
+    printw("Input:");
+    refresh();
+
+    half = (COLS - 2 * DX) / 2;
+    winA = newwin(ONLELINE, half, DX, DX);
+    winB = newwin(ONLELINE, half, DX, DX + half);
+    winO = newwin(LINES - ONLELINE - DX * 2, (COLS - 2 * DX), DX + ONLELINE, DX);
+    keypad(winA, TRUE);
+    keypad(winB, TRUE);
+    scrollok(winO, TRUE);
+    wmove(winO, 1, 0);
+    do {
+        werase(winA);
+        box(winA, 0, 0);
+        mvwgetnstr(winA, 1, 1, inA, MAXSTR);
+        werase(winB);
+        box(winB, 0, 0);
+        mvwgetnstr(winB, 1, 1, inB, MAXSTR);
+
+        pattern = (PCRE2_SPTR)inA;
+        subject = (PCRE2_SPTR)inB;
+        subject_length = (PCRE2_SIZE)strlen((char*)subject);
+
+        re = pcre2_compile(pattern, PCRE2_ZERO_TERMINATED, PCRE2_UCP, &errnum,
+                           &erroffs, NULL);
+
+        if (re == NULL) {
+            PCRE2_UCHAR buffer[256];
+            pcre2_get_error_message(errnum, buffer, sizeof(buffer));
+            wprintw(winO, "  PCRE2 compilation failed at offset %d: %s\n",
+                    (int)erroffs, buffer);
+            box(winO, 0, 0);
+            wrefresh(winO);
+            continue;
+        }
+
+        match_data = pcre2_match_data_create_from_pattern(re, NULL);
+
+        rc = pcre2_match(re, subject, subject_length, 0, 0, match_data, NULL);
+
+        if (rc < 0) {
+            switch (rc) {
+                case PCRE2_ERROR_NOMATCH:
+                    wprintw(winO, "  No match\n");
+                    break;
+                default:
+                    wprintw(winO, "  Matching error %d\n", rc);
+                    break;
+            }
+            box(winO, 0, 0);
+            wrefresh(winO);
+            continue;
+        }
+
+        ovector = pcre2_get_ovector_pointer(match_data);
+
+        for (i = 0; i < rc; i++) {
+            wprintw(winO, "  %2ld: %.*s\n", ovector[2 * i],
+                    (int)(ovector[2 * i + 1] - ovector[2 * i]),
+                    subject + ovector[2 * i]);
+        }
+
+        box(winO, 0, 0);
+        wrefresh(winO);
+    } while (*inA);
+
+    endwin();
+
+    pcre2_match_data_free(match_data); /* Release the memory that was used */
+    pcre2_code_free(re);               /* for the match data and the pattern. */
+}