diff --git a/lab04/main.cpp b/lab04/main.cpp
index 34d1b6d..dca8eff 100644
--- a/lab04/main.cpp
+++ b/lab04/main.cpp
@@ -2,6 +2,7 @@
 #include <cassert>
 #include <iomanip>
 #include <bitset>
+#include <cstddef>
 
 using namespace std;
 
@@ -94,6 +95,15 @@ void print_in_binary(uint16_t value) {
     cout << bits;
 }
 
+struct Student {
+    char name[17];          // 17 байт
+    uint16_t year;          // 2 байта
+    float gpa;              // 4 байта
+    unsigned gender : 1;    // 1 бит (битовое поле)
+    uint8_t courses;        // 1 байт
+    Student* monitor;       // 8 байт (для 64-битной системы)
+};
+
 int main() {
     // Тестирование чисел из лекционного слайда
     uint16_t a = 0x4d2;    // 1234 в десятичной
@@ -134,6 +144,45 @@ int main() {
     cout << "\n\nThe location of the structure in memory (binary):\n";
     print_in_binary(arr, sizeof(arr));
 
+    Student students[3] = {
+        {"Ivanov Ivan", 2023, 4.5f, 1, 3, &students[1]}, // 'f' suffix for float
+        {"Petrova Anna", 2022, 4.8f, 0, 4, nullptr},
+        {"Sidorov Alex", 2023, 4.2f, 1, 2, &students[1]}
+    };
+
+    // Structure analysis
+    std::cout << "Array address: " << &students << std::endl;
+    std::cout << "Array size: " << sizeof(students) << " bytes\n\n";
+
+    for (size_t i = 0; i < 3; i++) {
+        std::cout << "Element " << i << ":\n";
+        std::cout << "Address: " << &students[i] << std::endl;
+        std::cout << "Size: " << sizeof(students[i]) << " bytes\n";
+    }
+
+
+    Student& s = students[0];
+    std::cout << "\nFields of the first student:\n";
+    std::cout << "name:   Address=" << static_cast<void*>(s.name)
+              << " Offset=" << offsetof(Student, name)
+              << " Size=17 bytes\n";
+
+    std::cout << "year:   Address=" << &s.year
+              << " Offset=" << offsetof(Student, year)
+              << " Size=2 bytes\n";
+
+    std::cout << "gpa:    Address=" << &s.gpa
+              << " Offset=" << offsetof(Student, gpa)
+              << " Size=4 bytes\n";
+
+    std::cout << "courses:Address=" << static_cast<void*>(&s.courses)
+              << " Offset=" << offsetof(Student, courses)
+              << " Size=1 byte\n";
+
+    std::cout << "monitor:Address=" << &s.monitor
+              << " Offset=" << offsetof(Student, monitor)
+              << " Size=8 bytes\n";
+
     cout << endl;
 
     char op;