diff --git a/WorkingArrays/43Ex/input.txt b/WorkingArrays/43Ex/input.txt
new file mode 100644
index 0000000..27c3a72
--- /dev/null
+++ b/WorkingArrays/43Ex/input.txt
@@ -0,0 +1 @@
+3 3 3 3 3 3
\ No newline at end of file
diff --git a/WorkingArrays/43Ex/main.c b/WorkingArrays/43Ex/main.c
new file mode 100644
index 0000000..8d43740
--- /dev/null
+++ b/WorkingArrays/43Ex/main.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include "tools.h"
+#include "max_distance.h"
+
+int main(void) {
+    double * numbers;
+    int max_distance;
+    FILE * file = getFile();
+    if (file == NULL) return -1;
+
+    numbers = getList(file);
+    if (numbers == NULL) return 1;
+
+    max_distance = maxDistance(&numbers[1], (int)numbers[0] - 1);
+
+    if (max_distance == NO_LOCAL_MINIMA) printf("There are no local minima in the file");
+    else if (max_distance == ONE_LOCAL_MINIMUM) printf("Only one local minimum");
+    else printf("Max distance between local minimum is %d\n", max_distance);    
+
+    free(numbers);
+
+    return 0;
+}
diff --git a/WorkingArrays/43Ex/makefile b/WorkingArrays/43Ex/makefile
new file mode 100644
index 0000000..b0fef65
--- /dev/null
+++ b/WorkingArrays/43Ex/makefile
@@ -0,0 +1,11 @@
+all: main.o max_distance.o tools.o
+	gcc main.o max_distance.o tools.o && del *.o
+
+main.o: main.c
+	gcc -c main.c
+
+max_distance.o: max_distance.c
+	gcc -c max_distance.c
+
+tools.o: tools.c
+	gcc -c tools.c
diff --git a/WorkingArrays/43Ex/max_distance.c b/WorkingArrays/43Ex/max_distance.c
new file mode 100644
index 0000000..8de51b2
--- /dev/null
+++ b/WorkingArrays/43Ex/max_distance.c
@@ -0,0 +1,30 @@
+#include "max_distance.h"
+
+int maxDistance(double * array, int length) {
+	int end_first_min, start_last_min, len_local;
+	
+	end_first_min = 0;
+	start_last_min = 0;
+	len_local = 1;
+
+	for (int i = 1; i < length; ++i) {
+		if (len_local != OUT) {
+			 if ((array[i] - array[i - 1]) < -exp) {
+				 len_local = 1;
+			 } else if ((array[i] - array[i - 1]) > exp) {
+				 if (end_first_min == OUT) end_first_min = i;
+				 else if (start_last_min == OUT) start_last_min = i - len_local;
+				 len_local = 0;
+			 } else {++len_local;}
+		} else {
+			if ((array[i] - array[i - 1]) < -exp) len_local = 1;
+		}
+	}
+
+	if (len_local != OUT) start_last_min = length - len_local;
+	
+	if (end_first_min == 0) return NO_LOCAL_MINIMA;
+	else if (start_last_min == 0) return ONE_LOCAL_MINIMUM;
+	else return start_last_min - end_first_min;	
+}
+			
diff --git a/WorkingArrays/43Ex/max_distance.h b/WorkingArrays/43Ex/max_distance.h
new file mode 100644
index 0000000..b6d860a
--- /dev/null
+++ b/WorkingArrays/43Ex/max_distance.h
@@ -0,0 +1,11 @@
+#ifndef MAX_DISTANCE
+#define MAX_DISTANCE
+
+#define exp 1.e-6
+#define OUT 0
+#define NO_LOCAL_MINIMA -1
+#define ONE_LOCAL_MINIMUM -2
+
+int maxDistance(double * array, int length);
+
+#endif
diff --git a/WorkingArrays/43Ex/tools.c b/WorkingArrays/43Ex/tools.c
new file mode 100644
index 0000000..5fee269
--- /dev/null
+++ b/WorkingArrays/43Ex/tools.c
@@ -0,0 +1,57 @@
+#include "tools.h"
+
+FILE * getFile(void)
+{
+    FILE * file;
+    char filename[50];
+
+    printf("Enter filename: ");
+    if (scanf("%s", filename) == 1)
+    {
+        file = fopen(filename, "r");
+        if (file == NULL) {
+            printf("Error file!\n");
+            return NULL;
+        } else {
+            return file;
+        }
+    } else
+    {
+        printf("Empty name!\n");
+        return NULL;
+    }
+}
+
+double * getList(FILE * file) {
+    double current;
+    int i, length = 2;
+    double * numbers = NULL;
+
+    if (fscanf(file, "%lf", &current) != 1) {
+        printf("File is empty!");
+        return numbers;
+    }
+
+    numbers = (double *)malloc(length * sizeof(double));
+    i = 1;
+
+    do {
+        if (i >= length) {
+            length *= 2;
+            numbers = (double *)realloc(numbers, (length * sizeof(double)));
+        }
+        numbers[i] = current;
+        i++;
+    } while (fscanf(file, "%lf", &current) == 1);
+
+    numbers = (double *)realloc(numbers, i * sizeof(double));
+    numbers[0] = i;
+    return numbers;
+}
+
+void outputArray(double * array, int length) {
+    for (int i = 0; i < length; ++i) {
+        printf("%.1lf\n", array[i]);
+    }
+    printf("\n");
+}
diff --git a/WorkingArrays/43Ex/tools.h b/WorkingArrays/43Ex/tools.h
new file mode 100644
index 0000000..9c92e68
--- /dev/null
+++ b/WorkingArrays/43Ex/tools.h
@@ -0,0 +1,11 @@
+#ifndef TOOLS
+#define TOOLS
+
+#include <stdio.h>
+#include <stdlib.h>
+
+FILE * getFile(void);
+double * getList(FILE * file);
+void outputArray(double * array, int length);
+
+#endif