Add absolutely new main function

main.cpp

@@ -1,29 +1,65 @@
 #include <iostream>
-#include <iomanip>
-#include "lab04.h"
-
+#include <cassert>
 
 using namespace std;
 
-int main() {
-    uint8_t singleByte = 0xAB;
-    uint8_t byteArray[] = { 0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0 };
+// 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";
 
-    cout << "Print in Hex:" << endl;
-    print_in_hex(singleByte);
+    // Ïðîâåðêà íà êîððåêòíîñòü àðãóìåíòà
+    assert(0x0 <= i && i <= 0xf);
 
-    cout << endl;
-    print_in_hex(byteArray, sizeof(byteArray));
+    // 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;
 
-    cout << "\nPrint in Binary:" << endl;
-    print_in_binary(singleByte);
+    // Ïå÷àòü â äâîè÷íîé ôîðìå
+    cout << "Binary: ";
+    for (int i = 7; i >= 0; --i) {
+        cout << ((byte >> i) & 1);
+    }
     cout << endl;
-    print_in_binary(byteArray, sizeof(byteArray));
+}
+
+int main() {
+    // Òåñòèðîâàíèå ôóíêöèè nibble_to_hex
+    //for (int i = 0; i <= 0xf; ++i) {
+        //assert(nibble_to_hex(i) == nibble_to_hex(i));
+    //}
+
+    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');
+
+    // 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(){
+
+int main_calc() {
     uint16_t operand1, operand2;
     char operation;
 
@@ -44,7 +80,7 @@ int main_calc(){
     return 0;
 }
 
- int main_students() {
+int main_students() {
     // Student
     Student students[3] = {
         Student("Alice", 2019, 4.5, 0, 3, nullptr),