Родитель
a478b08794
Сommit
0927d1b42a
@ -1,107 +1,177 @@
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#include <iostream>
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#include <cassert>
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#include <cstdint> // Äëÿ uint8_t, uint16_t
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#include <cstring> // Äëÿ ðàáîòû ñ C-style ñòðîêàìè
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#include <iomanip> // Äëÿ âûâîäà â ôîðìàòå hex
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#include <fstream>
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#include <iomanip>
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#include <cstring>
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#include <cstdint>
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#include <cstddef>
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#include <string>
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using namespace std;
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// Ïå÷àòü áàéòà â øåñòíàäöàòåðè÷íîì âèäå
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// 1. Ôóíêöèè äëÿ ïå÷àòè äàííûõ
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void print_in_hex(uint8_t byte) {
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cout << hex << uppercase << (byte >> 4) << (byte & 0x0F) << ' ';
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std::cout << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(byte) << ' ';
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}
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// Ïå÷àòü ìàññèâà â øåñòíàäöàòåðè÷íîì âèäå
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void print_in_hex(const void* data, size_t size) {
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const uint8_t* bytes = reinterpret_cast<const uint8_t*>(data);
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for (size_t i = 0; i < size; i++) {
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const uint8_t* bytes = static_cast<const uint8_t*>(data);
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for (size_t i = 0; i < size; ++i) {
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print_in_hex(bytes[i]);
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if ((i + 1) % 16 == 0) cout << '\n';
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if ((i + 1) % 16 == 0) std::cout << '\n';
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}
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cout << dec << '\n'; // Âîçâðàùàåì äåñÿòè÷íûé ôîðìàò
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std::cout << '\n';
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}
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// Ïå÷àòü áàéòà â äâîè÷íîì âèäå
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void print_in_binary(uint8_t byte) {
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for (int i = 7; i >= 0; --i) {
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cout << ((byte >> i) & 1);
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std::cout << ((byte >> i) & 1);
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}
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cout << ' ';
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std::cout << ' ';
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}
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// Ïå÷àòü ìàññèâà â äâîè÷íîì âèäå
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void print_in_binary(const void* data, size_t size) {
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const uint8_t* bytes = reinterpret_cast<const uint8_t*>(data);
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for (size_t i = 0; i < size; i++) {
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const uint8_t* bytes = static_cast<const uint8_t*>(data);
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for (size_t i = 0; i < size; ++i) {
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print_in_binary(bytes[i]);
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if ((i + 1) % 4 == 0) cout << '\n';
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if ((i + 1) % 4 == 0) std::cout << '\n';
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}
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cout << '\n';
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std::cout << '\n';
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}
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// 2. Êàëüêóëÿòîð äëÿ ïîáèòîâûõ îïåðàöèé
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void bitwise_calculator() {
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uint16_t operand1, operand2;
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char op;
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cout << "Enter first operand (uint16_t): ";
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cin >> operand1;
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cout << "Enter operator (&, |, ^): ";
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cin >> op;
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cout << "Enter second operand (uint16_t): ";
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cin >> operand2;
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uint16_t result = 0;
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switch (op) {
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char operation;
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std::cout << "Enter the first operand: ";
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std::cin >> operand1;
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std::cout << "Enter the operator (&, |, ^): ";
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std::cin >> operation;
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std::cout << "Enter the second operand: ";
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std::cin >> operand2;
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uint16_t result;
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switch (operation) {
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case '&': result = operand1 & operand2; break;
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case '|': result = operand1 | operand2; break;
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case '^': result = operand1 ^ operand2; break;
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default:
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cerr << "Invalid operator!\n";
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std::cerr << "Invalid operator!\n";
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return;
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}
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cout << "Result in hex: ";
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std::cout << "Result in hexadecimal format: ";
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print_in_hex(&result, sizeof(result));
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cout << "Result in binary: ";
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std::cout << "Result in binary format: ";
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print_in_binary(&result, sizeof(result));
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}
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// 3. Ðàáîòà ñî ñòðóêòóðàìè
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struct Student {
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char name[17]; // Èìÿ ñòóäåíòà
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uint16_t year; // Ãîä ïîñòóïëåíèÿ
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float average_score; // Ñðåäíèé áàëë
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uint8_t gender : 1; // Ïîë: 0 - æåíñêèé, 1 - ìóæñêîé
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uint8_t completed_courses; // Êîëè÷åñòâî êóðñîâ
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Student* group_leader; // Óêàçàòåëü íà ñòàðîñòó
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char name[17];
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uint16_t year_of_admission;
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float gpa;
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unsigned gender : 1;
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uint8_t completed_courses;
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Student* group_leader;
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};
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void test_students() {
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void analyze_students() {
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Student students[3] = {
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{"Alice", 2020, static_cast<float>(4.5), 0, 3, nullptr},
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{"Bob", 2021, static_cast<float>(4.0), 1, 2, nullptr},
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{"Charlie", 2020, static_cast<float>(4.2), 1, 5, nullptr}
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{"Alice", 2020, 3.8, 0, 5, nullptr},
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{"Bob", 2020, 3.5, 1, 5, nullptr},
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{"Charlie", 2019, 4.0, 1, 6, nullptr}
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};
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// Ïå÷àòü àäðåñîâ è ðàçìåðîâ
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cout << "Array address: " << &students << ", size: " << sizeof(students) << " bytes\n";
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students[0].group_leader = &students[2];
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students[1].group_leader = &students[2];
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std::cout << "Array address: " << &students << "\n";
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std::cout << "Array size: " << sizeof(students) << " bytes\n\n";
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for (size_t i = 0; i < 3; ++i) {
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cout << "Student " << i + 1 << " address: " << &students[i] << ", size: " << sizeof(students[i]) << " bytes\n";
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std::cout << "Student " << i + 1 << ":\n";
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std::cout << " Address: " << &students[i] << "\n";
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std::cout << " Size: " << sizeof(students[i]) << " bytes\n";
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}
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// Ïå÷àòü âñåõ ïîëåé
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for (const auto& student : students) {
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cout << "Name: " << student.name << ", Address: " << (void*)student.name << '\n';
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cout << "Year: " << student.year << ", Address: " << &student.year << '\n';
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cout << "Average Score: " << student.average_score << ", Address: " << &student.average_score << '\n';
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cout << "Gender: " << static_cast<int>(student.gender) << '\n';
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cout << "Completed Courses: " << static_cast<int>(student.completed_courses) << '\n';
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cout << "Group Leader Address: " << student.group_leader << "\n\n";
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Student& student = students[0];
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std::cout << "\nAnalysis of Alice's fields:\n";
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std::cout << " Name: Address=" << static_cast<void*>(student.name)
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<< ", Offset=" << offsetof(Student, name)
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<< ", Size=" << sizeof(student.name) << '\n';
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std::cout << " Year of admission: Address=" << &student.year_of_admission
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<< ", Offset=" << offsetof(Student, year_of_admission)
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<< ", Size=" << sizeof(student.year_of_admission) << '\n';
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std::cout << " GPA: Address=" << &student.gpa
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<< ", Offset=" << offsetof(Student, gpa)
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<< ", Size=" << sizeof(student.gpa) << '\n';
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std::cout << " Number of courses: Address=" << static_cast<void*>(&student.completed_courses)
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<< ", Offset=" << offsetof(Student, completed_courses)
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<< ", Size=" << sizeof(student.completed_courses) << '\n';
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}
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// 4. Îáðàáîòêà òåêñòîâîãî ôàéëà
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void process_text_file() {
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const char* filename = "text.txt";
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std::ifstream file(filename, std::ios::binary);
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if (!file) {
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std::cerr << "File open error!\n";
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return;
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}
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file.seekg(0, std::ios::end);
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size_t filesize = file.tellg();
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file.seekg(0, std::ios::beg);
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char* buffer = new char[filesize];
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file.read(buffer, filesize);
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std::cout << "Enter the string to search for: ";
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char search_str[256];
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std::cin.ignore();
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std::cin.getline(search_str, 256);
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size_t count = 0;
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char* pos = buffer;
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while ((pos = strstr(pos, search_str)) != nullptr) {
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++count;
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pos += strlen(search_str);
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}
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std::cout << "Number of occurrences: " << count << "\n";
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delete[] buffer;
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}
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int main() {
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// Âûçîâ ôóíêöèé
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bitwise_calculator();
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test_students();
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std::cout << "Choose a task: 1 - Print, 2 - Calculator, 3 - Students, 4 - File\n";
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int choice;
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std::cin >> choice;
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switch (choice) {
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case 1:
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// Äåìîíñòðàöèÿ ôóíêöèé ïå÷àòè
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{
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uint16_t data = 0xABCD;
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std::cout << "Hexadecimal output:\n";
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print_in_hex(&data, sizeof(data));
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std::cout << "Binary output:\n";
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print_in_binary(&data, sizeof(data));
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}
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break;
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case 2:
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bitwise_calculator();
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break;
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case 3:
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analyze_students();
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break;
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case 4:
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process_text_file();
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break;
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default:
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std::cerr << "Invalid choice!\n";
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}
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return 0;
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}
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@ -0,0 +1,3 @@
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Hello, world!
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This is a test file.
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Hello again!
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