C++ cin Object and Its Functionality

The cin Object

• cin is the standard input object in C++.
• cin requires the iostream file to function.
• cin is used to read input from the keyboard.
• cin is often used with cout to display a user prompt before reading input.
• The stream extraction operator (>>), is used to retrieve data from cin.
• Input data is stored in one or more variables.

How cin Works

• User input goes from the keyboard to the input buffer, where it is stored as characters.
• cin converts the input data to the type that matches the variable.

Using cin for Multiple Values

• cin can be used to input multiple values at once.
• Multiple values must be separated by spaces or the Enter key.
• The Enter key must be pressed after typing the last value.
• Multiple values can be of different data types.
• The order of input is important, with the first value entered being stored in the first variable, and so on.

Mathematical Expressions

• A mathematical expression is something that can be evaluated to produce a value.

Learn about the cin object in C++, how it works, and its applications in reading input from the keyboard. Understand the role of iostream file and stream extraction operator.