For an ifstream object A, a class type B and a local variable of type B called C, the proper way to read in one B object from A into C is: A) A.read(&C, sizeof(B)); B) A.read(reinterpret_cast(&C), sizeof(B)); C) A.read(reinterpret_cast(&C), B); D) A.read(char* (&C), sizeof(B));

Question

Quizplus · Accepted Answer

The correct way to read in one B object from A into C is to use the read() function of the ifstream object with the second argument being the size of the object. To make sure that the object is read correctly, a reinterpret_cast should be used to convert the address of C to a char pointer before passing it to the read() function. Therefore, the best choice is B, which uses reinterpret_cast to convert the address of C to a char pointer and passes it to the read() function with the size of the object as the second argument.

For an Ifstream Object A, a Class Type B and a Local