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lab04-bits
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bits-3
maoki 1 год назад
Родитель 631bbbd907
Сommit c356be3a55
4 изменённых файлов: 318 добавлений и 0 удалений
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31
bits 3.sln
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Debug|x86 = Debug|x86
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{966AB6D0-A6A3-487E-88D8-4CD1C5DDEA6B}.Release|x64.Build.0 = Release|x64
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130
bits 3/bits 3.cpp
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#include <iostream>
#include <iomanip>
#include <bitset>
using namespace std;
typedef struct Student {
uint8_t name[17];
uint16_t year = 2000;
float score = 5.0;
uint8_t sex : 1;
uint16_t courses = 3;
Student* starosta = 0;
};
void print_in_hex(uint8_t byte) {
cout << setfill('0') << setw(2) << hex << (uint16_t)byte << " ";
}
void print_in_hex(const void* data, size_t size) {
for (size_t i = 0; i < size; i++) {
cout << setfill('0') << setw(2) << hex << (uint16_t) * ((uint8_t*)data + i) << " ";
if ((i + 1) % 16 == 0)
cout << endl;
}
}
void print_in_binary(uint8_t byte) {
cout << setfill('0') << setw(8) << bitset<8>(byte) << " ";
}
void print_in_binary(const void* data, size_t size) {
for (size_t i = 0; i < size; i++) {
cout << setfill('0') << setw(8) << bitset<8>(*((uint8_t*)data + i)) << " ";
if ((i + 1) % 4 == 0)
cout << endl;
}
}
int main()
{
Student group[3];
strcpy_s((char*)group[0].name, sizeof(Student::name), "Anton");
group[0].sex = 1;
strcpy_s((char*)group[1].name, sizeof(Student::name), "Ivan");
group[1].sex = 0;
group[1].starosta = &group[0];
strcpy_s((char*)group[2].name, sizeof(Student::name), "Sergey");
group[2].sex = 1;
group[2].starosta = &group[0];
// адрес и размер массива
void* groupAddr = &group[0];
cout << "Array 'group' at address ";
print_in_hex(&groupAddr, sizeof(void*));
cout << ", size " << dec << sizeof(group) << " bytes";
cout << endl << endl;
// адреса и размеры всех элементов массива
for (size_t i = 0; i < 3; i++) {
void* groupAddr = &group[i];
cout << "group[" << i << "] at address ";
print_in_hex(&groupAddr, sizeof(void*));
cout << ", size " << dec << sizeof(group[i]) << " bytes";
cout << endl;
}
// для всех полей одного из элементов ...
cout << endl << "group[1]:" << endl;
uint8_t* recordAddr = (uint8_t*)&group[1];
cout << ">>name at address ";
uint8_t* fieldAddr = recordAddr + offsetof(Student, name);
print_in_hex(&fieldAddr, sizeof(void*));
cout << ", offset " << offsetof(Student, name) << ", size " << dec << sizeof(Student::name) << endl << "Hex: " << endl;
print_in_hex(group[1].name, sizeof(Student::name));
cout << endl << "Bin: " << endl;
print_in_binary(group[1].name, sizeof(Student::name));
cout << endl;
cout << ">>year at address ";
fieldAddr = recordAddr + offsetof(Student, year);
print_in_hex(&fieldAddr, sizeof(void*));
cout << ", offset " << offsetof(Student, year) << ", size " << dec << sizeof(Student::year) << endl << "Hex: " << endl;
print_in_hex(&group[1].year, sizeof(Student::year));
cout << endl << "Bin: " << endl;
print_in_binary(&group[1].year, sizeof(Student::year));
cout << endl;
cout << ">>score at address ";
fieldAddr = recordAddr + offsetof(Student, score);
print_in_hex(&fieldAddr, sizeof(void*));
cout << ", offset " << offsetof(Student, score) << ", size " << dec << sizeof(Student::score) << endl << "Hex: " << endl;
print_in_hex(&group[1].score, sizeof(Student::score));
cout << endl << "Bin: " << endl;
print_in_binary(&group[1].score, sizeof(Student::score));
cout << endl;
cout << ">>courses at address ";
fieldAddr = recordAddr + offsetof(Student, courses);
print_in_hex(&fieldAddr, sizeof(void*));
cout << ", offset " << offsetof(Student, courses) << ", size " << dec << sizeof(Student::courses) << endl << "Hex: " << endl;
print_in_hex(&group[1].courses, sizeof(Student::courses));
cout << endl << "Bin: " << endl;
print_in_binary(&group[1].courses, sizeof(Student::courses));
cout << endl;
cout << ">>starosta at address ";
fieldAddr = recordAddr + offsetof(Student, starosta);
print_in_hex(&fieldAddr, sizeof(void*));
cout << ", offset " << offsetof(Student, starosta) << ", size " << dec << sizeof(Student::starosta) << endl << "Hex: " << endl;
print_in_hex(&group[1].starosta, sizeof(Student::starosta));
cout << endl << "Bin: " << endl;
print_in_binary(&group[1].starosta, sizeof(Student::starosta));
cout << endl;
// все элементы массива в шестнадцатеричном виде
for (size_t i = 0; i < 3; i++) {
cout << "group[" << i << "]:" << endl;
print_in_hex(&group[i], sizeof(Student));
cout << endl;
}
return 0;
}

135
bits 3/bits 3.vcxproj
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22
bits 3/bits 3.vcxproj.filters
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