For a type conversion operator, either the operand or the return type must be of the data type of the class or structure.

对于类型转换运算符，操作数或返回类型必须是类或结构的数据类型。

youdao

For a type conversion operator, either the operand or the return type must be of the data type of the class or structure.

对于类型转换运算符，操作数或返回类型必须是类或结构的数据类型。

youdao