联合中结构的重载类型转换运算符的问题

#include <iostream>

union Data {
    int i;
    float f;
    char str[20];
};

class MyClass {
public:
    int value;
    operator int() const { return value; } // 将MyClass对象转换为int
    operator float() const { return static_cast<float>(value); } // 将MyClass对象转换为float
};

int main() {
    Data data;
    data.i = 10;
    std::cout << "data.i: " << data.i << std::endl;

    data.f = 220.5;
    std::cout << "data.f: " << data.f << std::endl;

    strcpy(data.str, "C++");
    std::cout << "data.str: " << data.str << std::endl;

    MyClass obj;
    obj.value = 42;
    int intValue = obj; // 使用类型转换运算符将MyClass对象转换为int
    float floatValue = static_cast<float>(obj); // 使用类型转换运算符将MyClass对象转换为float

    std::cout << "intValue: " << intValue << std::endl;
    std::cout << "floatValue: " << floatValue << std::endl;

    return 0;
}