diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..94b5362
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,26 @@
+dist:     focal
+sudo:     required  # используем Virtual Machine (а не Docker container)
+
+language: c
+
+os:
+    - linux
+
+branches:
+  only:
+    - other
+
+compiler:
+  - gcc
+
+install:
+  - sudo apt-get install valgrind
+  - sudo pip3 install cpplint
+  - sudo apt install cppcheck
+
+script:
+- mkdir build
+- cd build
+- cmake ..
+- cmake —build .
+- ctest —output-on-failure
\ No newline at end of file
diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000..a0f1dc7
--- /dev/null
+++ b/.vscode/c_cpp_properties.json
@@ -0,0 +1,15 @@
+{
+    "configurations": [
+        {
+            "name": "Win32",
+            "includePath": [
+                "${default}"
+            ],
+            "compilerPath": "C:/Program Files/mingw-w64/x86_64-8.1.0-posix-seh-rt_v6-rev0/mingw64/bin/gcc.exe",
+            "cStandard": "c17",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "linux-gcc-x64"
+        }
+    ],
+    "version": 4
+}
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..7dca480
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.16)
+
+project(test)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}-pthread")
+
+set(LIB_SOURCE_FILE function.c)
+add_library(server STATIC ${LIB_SOURCE_FILE})
+
+add_compile_options("-lgcov —coverage")
+
+add_executable(main DZ1.c)
+target_link_libraries(main server)
\ No newline at end of file
diff --git a/DZ1.c b/DZ1.c
new file mode 100644
index 0000000..cdab437
--- /dev/null
+++ b/DZ1.c
@@ -0,0 +1,43 @@
+#include "function.h"
+
+int main() {
+	srand(time(NULL));
+	mus_comp	*array_mu_co = (mus_comp*)malloc(sizeof(mus_comp));\
+	if (array_mu_co == NULL) 
+	{
+		printf("Error associeted with malloc() in main()!");
+	} 
+	mus_comp element_mu_co;
+	char 	strin[MAX_SIZE_STRING];
+	int  	number_in_array, size_array = 1, input_count;
+	FILE 	*fin = fopen("C:\\Users\\Omar\\Desktop\\Tehnopark_C_Cpp\\Second\\DataBase.txt", "r");
+	if (fin == NULL) 
+	{
+		printf("Error! File with data can't open!");
+		return 0;
+	} 
+	for (number_in_array = 0;number_in_array < 125;++number_in_array) {
+		if (fgets(strin, MAX_SIZE_STRING, fin) == NULL) 
+		{
+			printf("Error with gets()!");
+			return 0;
+		}
+		element_mu_co = create_struct_music_composition(strin, fin);
+		if (element_mu_co.duration == NULL) 
+		{
+			return 0;
+		}
+		array_mu_co = add_in_array(array_mu_co, &size_array, &number_in_array, element_mu_co);
+		if (array_mu_co == NULL) 
+		{
+			return 0;
+		}
+	}
+	scanf("How many tracks do you want to see? %d",&input_count);
+    if (find_random_music_composition(array_mu_co, number_in_array, input_count) == ERROR) 
+	{
+		return 0;
+	}
+	fclose(fin);
+    return 0;
+}
diff --git a/DataBase.txt b/DataBase.txt
new file mode 100644
index 0000000..8d4e3c6
--- /dev/null
+++ b/DataBase.txt
@@ -0,0 +1,125 @@
+151 255 Evening Of Siilence
+150 251 Town Of Minds
+154 248 Fire Of My Beginning
+151 257 Dreamy Step
+151 252 Beat Game
+150 252 Dearest, Hold My Hand 
+153 246 Babe, You And I
+150 241 He Hopes He Can Dance
+154 259 I Said He Can Sing
+154 253 Life For The World
+154 249 Angel Of Subtlety
+154 249 Song Of My Song
+151 257 Thoughts Of My Love
+150 245 Dreamy Games
+151 247 Faded Heaven
+154 251 I'm Feeling Good
+150 244 Babe, I'm In The Mood
+151 254 She Said She's Innocent
+152 256 He Knows He's In The Mood
+150 255 Woman For Love
+154 241 All For The World
+153 258 Memories Of My Story
+152 254 Bridge Of My Memories
+153 252 Summer Things
+154 244 Best Games
+154 255 I'm Lonely Without You
+153 246 Darling, Remember The Good
+152 247 She Hopes He's Amazing
+152 256 She Knows I Can Sing
+154 249 New Kind Of The Good Life
+152 248 Thoughts Of Dreams
+154 247 Home Of My Home
+153 246 Interlude Of My Soul
+150 248 Welcome Promises
+154 254 Walking Things
+154 242 Babe, You're Perfect
+152 256 I'm Glad I'm Yours
+153 240 You Love Me
+154 259 He Loves You Can Dance
+151 244 Songs Of The Most Beautiful
+152 255 Dance For The Past
+150 259 Moments Of My Pleasures
+151 246 Home Of My Way
+154 250 Sweet Beauty
+154 245 Dearest Drink
+151 252 Dearest, Without You
+154 246 Baby, You're My Favorite
+152 248 She Thinks I Can Dance
+150 244 I Think She's Charming
+154 240 Man For An Evening
+151 240 Speak Of Solitude
+152 244 Suite Of My Soul
+151 247 Soul Of My Voice
+151 242 Nightlife Paradise
+151 256 Morning Beats
+152 244 You're A Mystery
+153 253 Honey, Let's Be Free
+151 246 She Thinks She's In The Mood
+150 255 I Think She Got It Going
+151 259 Man For An Evening
+154 253 Speak Of Solitude
+150 255 Suite Of My Soul
+152 246 Soul Of My Voice
+152 259 Nightlife Paradise
+150 249 Morning Beats
+153 255 You're A Mystery
+152 244 Honey, Let's Be Free
+152 258 She Thinks She's In The Mood
+151 259 I Think She Got It Going
+150 252 End Of Nothing
+153 242 Dance For The Road
+151 252 Tickle My Power
+154 241 Cling To My Life
+150 250 Birthday Tomorrow
+150 248 First Machine
+150 258 Babe, This Love Of Mine
+152 246 Babe, I Waited For You
+150 247 He Knows I Won't Stop
+151 241 I Hope He Likes To Party
+150 251 Matter For Me
+154 259 Melody For The Night
+150 251 Dreams Of My Rhythm
+153 240 Five Of My Pleasures
+152 241 Strange Drink
+151 259 Evening Chances
+154 244 Honey, Until I Met You
+151 245 Dearest, Come Back
+151 244 I Hope She Wrote 
+152 247 He Hopes I'm In Love
+154 244 Baal
+152 240 No Window
+150 256 Kadasarva	
+152 253 Trylon And Perisphere
+152 247 The Misted Muppet	
+151 250 Photos Of Ghosts
+153 256 Digital Talk	
+153 244 New Age Surf
+150 242 Logic Bomb	
+150 258 Sonic Algebra
+151 248 Man With No Name	
+154 255 Axis Flip
+153 258 Hypersonic	
+151 240 Dramatic Combo
+151 257 Overend Show
+152 245 Infected Mushroom	
+152 244 Cream
+154 251 Benza	
+154 250 Duck And Cover
+150 255 Troll Scientists	
+154 257 Phone The Lab
+152 257 Ananda Shake	
+151 251 Banana Banji
+150 253 Team 18	9+9
+150 240 Analog Pussy	
+150 241 Spooky Loops
+152 249 Generator Man
+150 257 Sabretooth	
+153 252 Smooth Hound
+154 248 Bio-Tonic	
+153 248 Mexicosed Brains
+151 244 Toï Doï	Fusion 
+150 258 Froide
+154 248 Igor Swamp	
+154 252 Stiff Manure
+152 243 Sattel Battle
\ No newline at end of file
diff --git a/function.c b/function.c
new file mode 100644
index 0000000..b72505b
--- /dev/null
+++ b/function.c
@@ -0,0 +1,84 @@
+#include "function.h"
+
+mus_comp *add_in_array(mus_comp *array_mu_co,int *SizeArray, int *number_in_array, mus_comp element_mu_co)
+{
+	if ((array_mu_co == NULL) || (SizeArray == NULL)) 
+	{
+		printf("Error associated with pointers in function add_in_array()!");
+		return NULL;
+	}
+	if (*number_in_array + 1 == *SizeArray)	 
+	{
+		(*SizeArray)  *= 2;
+		mus_comp	*old_ptrarray_mu_co = array_mu_co;
+		array_mu_co = (mus_comp *) realloc(old_ptrarray_mu_co,(*SizeArray)*sizeof(mus_comp));
+		if (array_mu_co == NULL)
+		{
+			printf("Error associated with Realloc() in function add_in_array()!");
+		}
+	}
+
+	array_mu_co[*number_in_array] = element_mu_co;
+	return array_mu_co;
+}
+
+int output_info(mus_comp *array_mu_co, int number_in_array)
+{
+	if (array_mu_co == NULL) 
+	{
+		printf("Error associated with pointers in function output_info()!");
+		return ERROR;
+	}
+	int i = 0;
+	while (i != number_in_array) 
+	{
+		mus_comp element_mu_co;
+		element_mu_co = array_mu_co[i];
+		printf("\n INDEX[%d]\n Bit: %d \n Duration: %d \n Name: %s\n",i, element_mu_co.bit, element_mu_co.duration, element_mu_co.name);
+		i++;
+	}
+}
+
+int find_random_music_composition(mus_comp *array_mu_co, int number_in_array, int coun_element) 
+{
+	if (array_mu_co == NULL) 
+	{
+		printf("Error associated with pointers in function output_info()!");
+		return ERROR;
+	}
+	int rand_bit = rand()%5 + 150;
+	int rand_duration=rand()%20 + 240;
+	int out_count = 1;
+	int index = 0;
+	printf(" Search for a track with parameters such as:\n Rhythm-> %d +-1 bit/min \n Duration -> %d +-5 second \n",rand_bit, rand_duration);
+	while ((out_count != coun_element+1) && (index < number_in_array)) 
+	{
+		if ((abs(array_mu_co[index].bit - rand_bit) <= 1) && (abs(array_mu_co[index].duration - rand_duration) <= 5)) 
+		{
+				mus_comp element_mu_co = array_mu_co[index];
+				printf("\n INDEX[%d]\n Bit: %d \n Duration: %d \n Name: %s\n",out_count, element_mu_co.bit, element_mu_co.duration, element_mu_co.name);
+				++out_count;
+		}
+		index++;
+	}
+	if (out_count != coun_element + 1) printf("There are no more music tracks with such parameters.");
+}
+
+mus_comp create_struct_music_composition(char *strin, FILE *fin) 
+{
+	if (strin == NULL) 
+	{
+		printf("Error associated with pointers in function output_info()!");
+		mus_comp element_mu_co;
+		element_mu_co.duration = NULL;
+		return element_mu_co;
+	}
+	char sbit[SIZE_NUMBER_IN_FILE+1],sduration[SIZE_NUMBER_IN_FILE+1],sname[MAX_SIZE_NAME];
+	mus_comp element_mu_co;
+	strncpy(sbit, &strin[0],SIZE_NUMBER_IN_FILE);
+	element_mu_co.bit = atoi(sbit);
+	strncpy(sduration, &strin[SIZE_NUMBER_IN_FILE+1],SIZE_NUMBER_IN_FILE);
+	element_mu_co.duration = atoi(sduration);
+	strcpy(element_mu_co.name, &strin[2*(SIZE_NUMBER_IN_FILE+1)]);
+	return element_mu_co;
+}
\ No newline at end of file
diff --git a/function.h b/function.h
new file mode 100644
index 0000000..c04979a
--- /dev/null
+++ b/function.h
@@ -0,0 +1,30 @@
+#ifndef FUNCTION_H
+#define FUNCTION_H
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h> 
+#include <time.h>
+
+#define MAX_SIZE_NAME 30 
+#define MAX_SIZE_STRING 40 
+#define SIZE_NUMBER_IN_FILE 3
+#define ERROR 404
+
+typedef struct mus_comp mus_comp;
+
+struct mus_comp {
+	int bit;
+	int duration;
+	char name[MAX_SIZE_NAME];
+};
+
+mus_comp *add_in_array(mus_comp *array_mu_co,int *SizeArray, int *number_in_array, mus_comp element_mu_co);
+
+int output_info(mus_comp *array_mu_co, int number_in_array);
+
+int find_random_music_composition(mus_comp *array_mu_co, int number_in_array, int coun_element);
+
+mus_comp create_struct_music_composition(char *strin, FILE *fin);
+
+#endif
\ No newline at end of file