Изменил(а) на '3.cpp'

3.cpp

@@ -1,141 +1,73 @@
+#include <cstdint>
 #include <iostream>
 #include <iomanip>
-#include <cstddef>
-#include <cstdint>
-#include <cstring>
 using namespace std;
 
-struct Student {
+char to_hex_char(uint8_t value) {
-    char name[17];
+    static const char hex_table[] = "0123456789ABCDEF";
-    uint16_t year;
+    return hex_table[value];
-    float average_score;
-    uint8_t gender : 1;
-    uint8_t courses : 7;
-    Student* head_student;
-};
-
-void print_hex(const void* data, size_t size) {
-    const uint8_t* bytes = reinterpret_cast<const uint8_t*>(data);
-    for (size_t i = 0; i < size; i++) {
-        cout << hex << uppercase << setw(2) << setfill('0')
-             << static_cast<int>(bytes[i]) << " ";
-    }
-    cout << dec;
 }
 
-void print_binary(const void* data, size_t size) {
+void print_hex_byte(uint8_t byte) {
-    const uint8_t* bytes = reinterpret_cast<const uint8_t*>(data);
+    cout << to_hex_char(byte >> 4) << to_hex_char(byte & 0x0F);
-    for (size_t i = 0; i < size; i++) {
-        for (int j = 7; j >= 0; j--) {
-            cout << ((bytes[i] >> j) & 1);
-        }
-        cout << " ";
-    }
 }
 
-int main() {
+void print_hex_number(uint16_t value) {
-    Student students[3];
+    uint8_t* bytes = reinterpret_cast<uint8_t*>(&value);
-
+    print_hex_byte(bytes[0]);
-    strcpy(students[0].name, "Ivanov Ivan");
+    cout << " ";
-    students[0].year = 2023;
+    print_hex_byte(bytes[1]);
-    students[0].average_score = 4.5f;
+}
-    students[0].gender = 1;
-    students[0].courses = 2;
-    students[0].head_student = nullptr;
-
-    strcpy(students[1].name, "Petrova Anna");
-    students[1].year = 2023;
-    students[1].average_score = 4.8f;
-    students[1].gender = 0;
-    students[1].courses = 2;
-    students[1].head_student = &students[0];
-
-    strcpy(students[2].name, "Sidorov Petr");
-    students[2].year = 2023;
-    students[2].average_score = 4.2f;
-    students[2].gender = 1;
-    students[2].courses = 2;
-    students[2].head_student = &students[0];
-
-    cout << "1. Информация о массиве:" << endl;
-    cout << "Адрес массива: " << &students << endl;
-    cout << "Размер массива: " << sizeof(students) << " байт" << endl << endl;
 
-    cout << "2. Информация об элементах массива:" << endl;
+void print_binary_byte(uint8_t byte) {
-    for (int i = 0; i < 3; i++) {
+    for (int i = 7; i >= 0; --i) {
-        cout << "Студент " << i << ":" << endl;
+        cout << ((byte >> i) & 1);
-        cout << "Адрес: " << &students[i] << endl;
-        cout << "Размер: " << sizeof(Student) << " байт" << endl << endl;
     }
+}
 
-    cout << "3. Детальная информация о полях второго студента:" << endl;
+void print_binary_number(uint16_t value) {
-
+    uint8_t* bytes = reinterpret_cast<uint8_t*>(&value);
-    cout << "name:" << endl;
+    print_binary_byte(bytes[0]);
-    cout << "  Адрес: " << static_cast<void*>(students[1].name) << endl;
+    print_binary_byte(bytes[1]);
-    cout << "  Смещение: " << offsetof(Student, name) << endl;
+}
-    cout << "  Размер: " << sizeof(students[1].name) << " байт" << endl;
-    cout << "  Hex: ";
-    print_hex(students[1].name, sizeof(students[1].name));
-    cout << endl << "  Bin: ";
-    print_binary(students[1].name, sizeof(students[1].name));
-    cout << endl << endl;
-
-    cout << "year:" << endl;
-    cout << "  Адрес: " << &students[1].year << endl;
-    cout << "  Смещение: " << offsetof(Student, year) << endl;
-    cout << "  Размер: " << sizeof(students[1].year) << " байт" << endl;
-    cout << "  Hex: ";
-    print_hex(&students[1].year, sizeof(students[1].year));
-    cout << endl << "  Bin: ";
-    print_binary(&students[1].year, sizeof(students[1].year));
-    cout << endl << endl;
-
-    cout << "average_score:" << endl;
-    cout << "  Адрес: " << &students[1].average_score << endl;
-    cout << "  Смещение: " << offsetof(Student, average_score) << endl;
-    cout << "  Размер: " << sizeof(students[1].average_score) << " байт" << endl;
-    cout << "  Hex: ";
-    print_hex(&students[1].average_score, sizeof(students[1].average_score));
-    cout << endl << "  Bin: ";
-    print_binary(&students[1].average_score, sizeof(students[1].average_score));
-    cout << endl << endl;
 
-    cout << "head_student:" << endl;
+int main() {
-    cout << "  Адрес: " << &students[1].head_student << endl;
+    uint16_t input1, input2;
-    cout << "  Смещение: " << offsetof(Student, head_student) << endl;
+    char operation;
-    cout << "  Размер: " << sizeof(students[1].head_student) << " байт" << endl;
+
-    cout << "  Hex: ";
+    cin >> input1 >> operation >> input2;
-    print_hex(&students[1].head_student, sizeof(students[1].head_student));
+
-    cout << endl << "  Bin: ";
+    uint16_t outcome;
-    print_binary(&students[1].head_student, sizeof(students[1].head_student));
+    switch (operation) {
-    cout << endl << endl;
+        case '&':
+            outcome = input1 & input2;
+            break;
+        case '|':
+            outcome = input1 | input2;
+            break;
+        case '^':
+            outcome = input1 ^ input2;
+            break;
+        default:
+            cout << "Ошибка: доступны только &, | и ^" << endl;
+            return 1;
+    }
 
-    cout << "4. Шестнадцатеричное представление структур:" << endl;
+    cout << input1 << " " << operation << " " << input2 << endl;
-    for (int i = 0; i < 3; i++) {
-        cout << "Студент " << i << " (староста: " << (i == 0 ? "да" : "нет") << "):" << endl;
-        cout << "  Все поля: ";
-        print_hex(&students[i], sizeof(Student));
-        cout << endl;
-        cout << "  name: ";
-        print_hex(&students[i].name, sizeof(students[i].name));
-        cout << endl;
-        cout << "  year: ";
-        print_hex(&students[i].year, sizeof(students[i].year));
-        cout << endl;
-        cout << "  average_score: ";
-        print_hex(&students[i].average_score, sizeof(students[i].average_score));
-        cout << endl;
 
-        // Получаем значение байта, содержащего битовые поля
+    print_hex_number(input1);
-        uint8_t bit_fields = (students[i].gender << 7) | students[i].courses;
+    cout << " " << operation << " ";
-        cout << "  gender и courses (как байт): ";
+    print_hex_number(input2);
-        print_hex(&bit_fields, sizeof(bit_fields));
+    cout << " = ";
-        cout << endl;
+    print_hex_number(outcome);
+    cout << endl;
 
-        cout << "  head_student: ";
+    print_binary_number(input1);
-        print_hex(&students[i].head_student, sizeof(students[i].head_student));
+    cout << " " << operation << endl;
-        cout << endl << endl;
+    print_binary_number(input2);
-    }
+    cout << " =" << endl;
+    print_binary_number(outcome);
+    cout << endl;
 
     return 0;
-}
+}