在C++中获取相反的结构字段

#include <iostream>

struct MyStruct {
    int field1;
    float field2;
    char field3;
};

int main() {
    MyStruct myStruct;
    myStruct.field1 = 10;
    myStruct.field2 = 3.14;
    myStruct.field3 = 'A';

    // 获取相反的结构字段
    int* field1Ptr = reinterpret_cast<int*>(&myStruct);
    float* field2Ptr = reinterpret_cast<float*>(reinterpret_cast<char*>(&myStruct) + sizeof(int));
    char* field3Ptr = reinterpret_cast<char*>(reinterpret_cast<char*>(&myStruct) + sizeof(int) + sizeof(float));

    // 输出相反的结构字段值
    std::cout << "field1: " << *field1Ptr << std::endl;
    std::cout << "field2: " << *field2Ptr << std::endl;
    std::cout << "field3: " << *field3Ptr << std::endl;

    return 0;
}