Question

In any program that uses the cin object, you must include the ________.

A) compiler
B) iostream header file
C) linker
D) >> and << operators
E) None of the above

Answer 1

In a program that uses the cin object, the iostream header file must be included to provide definitions and functionality for stream operations.

Step-by-step explanation:

In a program that uses the cin object, you must include the iostream header file. The cin object is part of the standard C++ library for input and output operations. Including the iostream header is necessary to provide the program with the definitions and functionality related to input/output stream operations. Without it, the cin object and other stream objects like cout would not be recognized by the compiler.

The correct answer to the question is: "In any program that uses the cin object, you must include the B) iostream header file."

This header file allows the program to use the >> and << operators, which are the stream extraction and insertion operators used to read and write data to streams respectively. However, these operators are not what you need to include; it's the header file that contains the definitions of these operators and cin object.