main.cpp

@@ -1,72 +1,82 @@
 #include <iostream>
-#include <iomanip>
+#include <cassert>
-#include <cstring>
-#include <bitset>
 
-using namespace std;
+#include <iostream>
+#include <cstdint>
+#include <cassert>
 
-struct Student {
+char nibble_to_hex(uint8_t i) {
-    char name[17];
+    char digits[] = "0123456789abcdef";
-    uint16_t admissionYear;
+    assert(0x0 <= i && i <= 0xf);
-    float averageGrade;
+    return digits[i];
-    bool isMale : 1;
+}
-    uint8_t completedCourses;
-    Student* groupLeader;
-};
 
-int main() {
+void print_in_hex(uint8_t byte) {
-    const int numberOfStudents = 3;
+    std::cout << nibble_to_hex(byte >> 4) << nibble_to_hex(byte & 0xf);
-    Student students[numberOfStudents];
+}
-
+
-    students[0].admissionYear = 2023;
+// Ôóíêöèÿ äëÿ ïðåîáðàçîâàíèÿ òèïîâ
-    students[0].averageGrade = 4.5;
+const uint8_t* as_bytes(const void* data) {
-    students[0].isMale = true;
+    return reinterpret_cast<const uint8_t*>(data);
-    students[0].completedCourses = 5;
+}
-    students[0].groupLeader = nullptr;
+
-
+// Ôóíêöèÿ äëÿ ïå÷àòè ìàññèâà áàéòîâ
-    students[1].admissionYear = 2022;
+void print_in_hex(const void* data, size_t size) {
-    students[1].averageGrade = 3.8;
+    const uint8_t* bytes = as_bytes(data);
-    students[1].isMale = false;
+    for (size_t i = 0; i < size; i++) {
-    students[1].completedCourses = 6;
+        print_in_hex(bytes[i]);
-    students[1].groupLeader = &students[0];
+
-
+        // Äëÿ óäîáñòâà ÷òåíèÿ: ïðîáåëû ìåæäó áàéòàìè, ïî 16 áàéò íà ñòðîêó.
-    students[2].admissionYear = 2021;
+        if ((i + 1) % 16 == 0) {
-    students[2].averageGrade = 3.2;
+            std::cout << '\n';
-    students[2].isMale = true;
+        } else {
-    students[2].completedCourses = 7;
+            std::cout << ' ';
-    students[2].groupLeader = nullptr;
-
-    for (int i = 0; i < numberOfStudents; ++i) {
-        cout << "\nÈíôîðìàöèÿ î ñòóäåíòå " << i + 1 << ":\n";
-        cout << "Àäðåñ ïîëÿ admissionYear: " << static_cast<void*>(&students[i].admissionYear) << ", Ñìåùåíèå: "
-             << offsetof(Student, admissionYear) << ", Ðàçìåð: " << sizeof(students[i].admissionYear) << " áàéò, "
-             << "Øåñòíàäöàòåðè÷íîå: " << hex << students[i].admissionYear << ", Äâîè÷íîå: "
-             << bitset<16>(students[i].admissionYear) << '\n';
-
-        cout << "Àäðåñ ïîëÿ averageGrade: " << static_cast<void*>(&students[i].averageGrade) << ", Ñìåùåíèå: "
-             << offsetof(Student, averageGrade) << ", Ðàçìåð: " << sizeof(students[i].averageGrade) << " áàéò, "
-             << "Çíà÷åíèå: " << students[i].averageGrade << '\n';
-
-        cout << "Àäðåñ è áèòîâîå ïîëå isMale: " << static_cast<void*>(&students[i].isMale) << ", Ñìåùåíèå: "
-             << offsetof(Student, isMale) << ", Ðàçìåð: " << sizeof(students[i].isMale) << " áèò, "
-             << "Çíà÷åíèå: " << (students[i].isMale ? "ìóæñêîé" : "æåíñêèé") << '\n';
-
-        cout << "Àäðåñ ïîëÿ completedCourses: " << static_cast<void*>(&students[i].completedCourses) << ", Ñìåùåíèå: "
-             << offsetof(Student, completedCourses) << ", Ðàçìåð: " << sizeof(students[i].completedCourses) << " áàéò, "
-             << "Çíà÷åíèå: " << static_cast<int>(students[i].completedCourses) << '\n';
-
-        cout << "Àäðåñ ïîëÿ groupLeader: " << static_cast<void*>(&students[i].groupLeader) << ", Ñìåùåíèå: "
-             << offsetof(Student, groupLeader) << ", Ðàçìåð: " << sizeof(students[i].groupLeader) << " áàéò, "
-             << "Øåñòíàäöàòåðè÷íîå: " << hex << reinterpret_cast<uintptr_t>(students[i].groupLeader) << '\n';
-
-        // Âûâîäèì ïðåäñòàâëåíèå ñòðóêòóðû â ïàìÿòè
-        cout << "Ïðåäñòàâëåíèå â ïàìÿòè (â øåñòíàäöàòåðè÷íîé ñèñòåìå):\n";
-        const uint8_t* bytes = reinterpret_cast<const uint8_t*>(&students[i]);
-        for (size_t j = 0; j < sizeof(Student); ++j) {
-            cout << hex << setfill('0') << setw(2) << static_cast<int>(bytes[j]) << ' ';
         }
-        cout << '\n';
     }
+    std::cout << std::endl;
+}
+
+// Ôóíêöèÿ äëÿ ïðîâåðêè áèòîâ è âûâîäà èõ â äâîè÷íîé ñèñòåìå
+char bit_digit(uint8_t byte, uint8_t bit) {
+    if (byte & (0x1 << bit)) {
+        return '1';
+    }
+    return '0';
+}
+
+int main() {
+    uint8_t u8 = 0x42;
+    uint16_t u16 = 0x42;
+    uint32_t u32 = 0x42;
+
+    std::cout << "u8 bytes: ";
+    print_in_hex(&u8, sizeof(u8));
+
+    std::cout << "\nu8 binary: ";
+    for (int i = 7; i >= 0; --i) {
+        std::cout << bit_digit(u8, i);
+    }
+    std::cout << '\n';
+
+    std::cout << "\nu16 bytes: ";
+    print_in_hex(&u16, sizeof(u16));
+
+    std::cout << "\nu16 binary: ";
+    for (int i = 15; i >= 0; --i) {
+        std::cout << bit_digit(u16, i);
+    }
+    std::cout << '\n';
+
+    std::cout << "\nu32 bytes: ";
+    print_in_hex(&u32, sizeof(u32));
+
+    std::cout << "\nu32 binary: ";
+    for (int i = 31; i >= 0; --i) {
+        std::cout << bit_digit(u32, i);
+    }
+    std::cout << '\n';
 
     return 0;
 }
+
+