Вы не можете выбрать более 25 тем
Темы должны начинаться с буквы или цифры, могут содержать дефисы(-) и должны содержать не более 35 символов.
127 строки
2.7 KiB
C++
127 строки
2.7 KiB
C++
#include <iostream>
|
|
#include <cassert>
|
|
#include <iomanip>
|
|
|
|
using namespace std;
|
|
|
|
//char nibble_to_hex(uint8_t i)
|
|
char nibble_to_hex(uint8_t i) //Conversion to hex format
|
|
{
|
|
assert(0x0 <= i && i <= 0xf);
|
|
return "0123456789abcdef"[i];
|
|
}
|
|
|
|
void print_in_hex(uint8_t byte)
|
|
{
|
|
cout << nibble_to_hex(byte >> 4)
|
|
<< nibble_to_hex(byte & 0xf);
|
|
}
|
|
|
|
const uint8_t* as_bytes(const void* data);
|
|
|
|
void print_in_hex(const void* data, size_t size)
|
|
{
|
|
const uint8_t* bytes = as_bytes(data);
|
|
for (size_t i = 0; i < size; i++)
|
|
{
|
|
print_in_hex(bytes[i]);
|
|
|
|
if ((i + 1) % 16 == 0)
|
|
{
|
|
cout << '\n';
|
|
}
|
|
else
|
|
{
|
|
cout << ' ';
|
|
}
|
|
}
|
|
}
|
|
|
|
const uint8_t* as_bytes(const void* data)
|
|
{
|
|
return reinterpret_cast<const uint8_t*>(data);
|
|
}
|
|
|
|
|
|
char
|
|
bit_digit(uint8_t byte, uint8_t bit) {
|
|
if (byte & (0x1 << bit)) {
|
|
return '1';
|
|
}
|
|
return '0';
|
|
}
|
|
|
|
|
|
void print_in_binary(uint8_t byte) {
|
|
for (int bit = 7; bit >= 0; bit--) {
|
|
cout << bit_digit(byte, bit);
|
|
}
|
|
}
|
|
|
|
void print_in_binary(const void* data, size_t size) {
|
|
const uint8_t* bytes = static_cast<const uint8_t*>(data);
|
|
for (size_t i = 0; i < size; i++) {
|
|
// Äîáàâëÿåì ïðîáåë ïåðåä áàéòîì, êðîìå ïåðâîãî â ñòðîêå
|
|
if (i % 4 == 0 && i != 0) {
|
|
cout << "\n";
|
|
}
|
|
else if (i != 0) {
|
|
cout << " ";
|
|
}
|
|
print_in_binary(bytes[i]);
|
|
}
|
|
cout << "\n"; // Ïåðåíîñ ñòðîêè â êîíöå
|
|
}
|
|
|
|
struct Example {
|
|
uint8_t a;
|
|
uint16_t b;
|
|
uint32_t c;
|
|
char d[3];
|
|
};
|
|
|
|
int main() {
|
|
// Òåñòèðîâàíèå ÷èñåë èç ëåêöèîííîãî ñëàéäà
|
|
uint16_t a = 0x4d2; // 1234 â äåñÿòè÷íîé
|
|
uint16_t b = 0x1234; // 4660 â äåñÿòè÷íîé
|
|
|
|
cout << "0x4d2 (1234) in binary:\n";
|
|
print_in_binary(&a, sizeof(a));
|
|
cout << "\n\n";
|
|
|
|
cout << "0x1234 (4660) in binary:\n";
|
|
print_in_binary(&b, sizeof(b));
|
|
cout << "\n\n";
|
|
|
|
// Ïðèìåð ñ àðèôìåòè÷åñêèìè îïåðàöèÿìè
|
|
uint16_t sum = a + b;
|
|
uint16_t diff = b - a;
|
|
uint16_t xorr = a ^ b;
|
|
|
|
cout << "Sum (0x4d2 + 0x1234):\n";
|
|
print_in_binary(&sum, sizeof(sum));
|
|
cout << "\n\n";
|
|
|
|
cout << "Difference (0x1234 - 0x4d2):\n";
|
|
print_in_binary(&diff, sizeof(diff));
|
|
cout << "\n\n";
|
|
|
|
cout << "XOR (0x4d2 ^ 0x1234):\n";
|
|
print_in_binary(&xorr, sizeof(xorr));
|
|
cout << "\n\n";
|
|
|
|
Example arr[2] = {
|
|
{0x01, 0x0203, 0x04050607, {'a', 'b', 'c'}},
|
|
{0x08, 0x090a, 0x0b0c0d0e, {'d', 'e', 'f'}}
|
|
};
|
|
|
|
cout << "The location of the structure in memory (hex):\n";
|
|
print_in_hex(arr, sizeof(arr));
|
|
cout << "\n\nThe location of the structure in memory (binary):\n";
|
|
print_in_binary(arr, sizeof(arr));
|
|
|
|
|
|
cin.ignore();
|
|
return 0;
|
|
}
|