Add absolutely new main function

Примечание: В данном коде предполагается, что введенные пользователем данные корректны. На практике, для полной надежности, следует добавить проверки на корректность ввода данных.

lab04.cbp

@@ -39,6 +39,7 @@
 		<Unit filename="lab04.h" />
 		<Unit filename="main.cpp" />
 		<Unit filename="source.cpp" />
+		<Unit filename="students.cpp" />
 		<Extensions>
 			<lib_finder disable_auto="1" />
 		</Extensions>

lab04.h

@@ -1,8 +1,10 @@
 #ifndef LAB04_H_INCLUDED
 #define LAB04_H_INCLUDED
+
 #include <iostream>
 #include <iomanip>
 #include <cstdint>
+#include <cstring>
 #pragma once
 
 void print_in_hex(uint8_t byte);
@@ -12,4 +14,24 @@ void print_in_binary(const void* data, size_t size);
 uint16_t perform_bitwise_operation(uint16_t operand1, char operation, uint16_t operand2);
 void print_calculation(uint16_t result);
 
+// Student
+struct Student {
+    char name[17];
+    uint16_t admissionYear;
+    float averageGrade;
+    unsigned int gender : 1;
+    unsigned int completedCourses;
+    Student* groupLeader;
+
+    // Initialisation
+    Student(const char* n, uint16_t year, float grade, unsigned int g, unsigned int courses, Student* leader)
+        : admissionYear(year), averageGrade(grade), gender(g), completedCourses(courses), groupLeader(leader)
+    {
+        strncpy(name, n, sizeof(name) - 1);
+        name[sizeof(name) - 1] = '\0';
+    }
+};
+
+void printStudentDetails(const Student& student);
+
 #endif // LAB04_H_INCLUDED

main.cpp

@@ -1,28 +1,64 @@
 #include <iostream>
-#include <iomanip>
-#include "lab04.h"
-
+#include <cassert>
 
 using namespace std;
 
+// Ôóíêöèÿ äëÿ ïðåäñòàâëåíèÿ nibble (4 áèò) â øåñòíàäöàòåðè÷íîé ñèñòåìå
+char nibble_to_hex(uint8_t i) {
+    // Ìàññèâ öèôð â øåñòíàäöàòåðè÷íîé ñèñòåìå
+    char digits[] = "0123456789abcdef";
+
+    // Ïðîâåðêà íà êîððåêòíîñòü àðãóìåíòà
+    assert(0x0 <= i && i <= 0xf);
+
+    // Âîçâðàùàåì ñèìâîë äëÿ nibble èç ìàññèâà digits
+    return digits[i];
+}
+
+// Ôóíêöèÿ äëÿ ïå÷àòè îäíîãî áàéòà â øåñòíàäöàòåðè÷íîé è äâîè÷íîé ôîðìå
+void print_in_hex(uint8_t byte) {
+    // Ïå÷àòü â øåñòíàäöàòåðè÷íîé ôîðìå
+    cout << "Hex: " << nibble_to_hex(byte >> 4) << nibble_to_hex(byte & 0xf) << endl;
+
+    // Ïå÷àòü â äâîè÷íîé ôîðìå
+    cout << "Binary: ";
+    for (int i = 7; i >= 0; --i) {
+        cout << ((byte >> i) & 1);
+    }
+    cout << endl;
+}
+
 int main() {
-    uint8_t singleByte = 0xAB;
-    uint8_t byteArray[] = { 0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0 };
+    // Òåñòèðîâàíèå ôóíêöèè nibble_to_hex
+    //for (int i = 0; i <= 0xf; ++i) {
+        //assert(nibble_to_hex(i) == nibble_to_hex(i));
+    //}
 
-    cout << "Print in Hex:" << endl;
-    print_in_hex(singleByte);
+    assert(nibble_to_hex(0x0) == '0');
+    assert(nibble_to_hex(0x1) == '1');
+    assert(nibble_to_hex(0x2) == '2');
+    assert(nibble_to_hex(0x3) == '3');
+    assert(nibble_to_hex(0x4) == '4');
+    assert(nibble_to_hex(0x5) == '5');
+    assert(nibble_to_hex(0x6) == '6');
+    assert(nibble_to_hex(0x7) == '7');
+    assert(nibble_to_hex(0x8) == '8');
+    assert(nibble_to_hex(0x9) == '9');
+    assert(nibble_to_hex(0xa) == 'a');
+    assert(nibble_to_hex(0xb) == 'b');
+    assert(nibble_to_hex(0xc) == 'c');
+    assert(nibble_to_hex(0xd) == 'd');
+    assert(nibble_to_hex(0xe) == 'e');
+    assert(nibble_to_hex(0xf) == 'f');
 
-    cout << endl;
-    print_in_hex(byteArray, sizeof(byteArray));
-
-    cout << "\nPrint in Binary:" << endl;
-    print_in_binary(singleByte);
-    cout << endl;
-    print_in_binary(byteArray, sizeof(byteArray));
+    // Ïå÷àòü áàéòà â øåñòíàäöàòåðè÷íîé è äâîè÷íîé ôîðìå
+    uint8_t test_byte = 0x2f;
+    print_in_hex(test_byte);
 
     return 0;
 }
 
+
 int main_calc() {
     uint16_t operand1, operand2;
     char operation;
@@ -43,3 +79,20 @@ int main_calc(){
 
     return 0;
 }
+
+int main_students() {
+    // Student
+    Student students[3] = {
+        Student("Alice", 2019, 4.5, 0, 3, nullptr),
+        Student("Bob", 2019, 4.2, 1, 2, nullptr),
+        Student("Charlie", 2019, 4.7, 1, 4, nullptr) // Îáðàòèòå âíèìàíèå, ÷òî òóò íåò óêàçàòåëÿ íà groupLeader
+    };
+
+    // Details
+    for (int i = 0; i < 3; ++i) {
+        std::cout << "\nDetails of Student " << i + 1 << ":" << std::endl;
+        printStudentDetails(students[i]);
+    }
+
+    return 0;
+}

source.cpp

@@ -1,5 +1,4 @@
 #include "lab04.h"
-#include "calc_bits.h"
 #include <string>