Question

By default the standard input device for c++ program is:

• A. Keyboard
• B. Mouse
• C. Scanner
• D. None of the options

Answer 1

The correct option is A

Keyboard

The correct answer is option (A) Key board

Basic input for C++ program

The standard input device for the C++ program is Keyboard. C++ uses a suitable abstraction called streams to perform input and output operations in steady media such as the screen or the keyboard.

• The standard input stream is sually the input device in a computer is the keyboard.
• C++ cin statement is the occurrence of the class stream and is applied to read input from the standard input device which is customarily a keyboard.
• The extraction operator(>>) is utilised along with the object cin for reading inputs. The extraction operator extracts the data from the object cin which is entered using the keyboard.