C++
- C++ Introduction
- C++ Getting Started
- C++ Syntax
- C++ Output (Print Text)
- C++ Comments
- C++ Variables
- C++ Declare Multiple Variables
- C++ Identifiers
- C++ User Input
- C++ Data Types
- C++ Operators
- C++ Strings
- C++ Math
- C++ Booleans
- C++ Conditions
- C++ Switch
- C++ While Loop
- C++ For Loop
- C++ Break And Continue
- C++ Arrays
- C++ References
- C++ Pointers
- C++ Functions
- C++ Function Overloading
- C++ OOP
- C++ Classes And Objects
- C++ Class Methods
- C++ Constructors
- C++ Access Specifiers
- C++ Encapsulation
- C++ Inheritance
- C++ Multilevel Inheritance
- C++ Multiple Inheritance
- C++ Inheritance Access
- C++ Polymorphism
- C++ Files
- C++ Exceptions
- C++ How To Add Two Numbers
C++ User Input
C++ User Input
You have already learned that cout is used to output (print) values. Now we will use cin to get user input.
cin is a predefined variable that reads data from the keyboard with the extraction operator (>>).
In the following example, the user can input a number, which is stored in the variable x. Then we print the value of x:
Example
int x;
cout << "Type a number: "; // Type a number and press enter
cin >> x; // Get user input from the keyboard
cout << "Your number is: " << x; // Display the input value
cout << "Type a number: "; // Type a number and press enter
cin >> x; // Get user input from the keyboard
cout << "Your number is: " << x; // Display the input value
Practice Excercise Practice now
Creating A Simple Calculator
In this example, the user must input two numbers. Then we print the sum by calculating (adding) the two numbers:
Example
int x, y;
int sum;
cout << "Type a number: ";
cin >> x;
cout << "Type another number: ";
cin >> y;
sum = x + y;
cout << "Sum is: " << sum;
int sum;
cout << "Type a number: ";
cin >> x;
cout << "Type another number: ";
cin >> y;
sum = x + y;
cout << "Sum is: " << sum;
Practice Excercise Practice now
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