【C++】二进制传输结构体

#include <iostream>
#include <string>

typedef struct{
    char test[32];
    int a;
    double b;
}BaseA;

typedef struct{
    double b;
    char test[32];
    int a;
}BaseB;

int main() {
    BaseA base;
    std::string strTemp = "hello";
    snprintf(base.test, sizeof(strTemp), strTemp.c_str());
    base.a = 1;
    base.b = 3.14;

    // 将结构体转换为 char*
    char* ptr = reinterpret_cast<char*>(&base);

    // 正确
    auto* base2 = (BaseA*)ptr;

    // 异常  需要保证传输双方使用相同的结构体
    // BaseB* base2 = (BaseB*)ptr;

    std::cout << base2->test << std::endl;

    return 0;
}