How to Read and Print an Integer value in C++

The given task is to take an integer as input from the user and print that integer in C++ language.  In this article, we will learn how to read and print an integer value.

In the below program, the syntax and procedures to take the integer as input from the user is shown in C++ language. 

Standard Input Stream

• The user enters an integer value when asked.
• This value is taken from the user with the help of the cin method. The cin method, in C++, reads the value from the console into the specified variable. 

Syntax:

cin >> variableOfXType;

Here,

>> is the extraction operator and is used along with the object cin for reading inputs. 
The extraction operator extracts the data from the object cin which is entered using the keyboard.

For an integer value, the X is replaced with the type int. The syntax of the cin method becomes as follows then: 

cin >> variableOfIntType;

This entered value is now stored in the variableOfIntType. Now to print this value, cout method is used. 

Standard Output Stream

The cout method, in C++, prints the value passed as the parameter to it, on the console screen. 

Syntax:

cout << variableOfXType;

Here,

<< is the insertion operator. 
The data needed to be displayed on the screen is inserted in the standard output stream (cout) using the insertion operator (<<).

For an integer value, the X is replaced with the type int. The syntax of cout() method becomes as follows then: 

cout << variableOfIntType;

Hence, the integer value is successfully read and printed.

Below is the C++ program to read and print an integer value:

// C++ program to take an integer
// as input and print it
#include <iostream>
using namespace std;

// Driver code
int main()
{
    // Declare the variables
    int num;

    // Input the integer
    cout << "Enter the integer: ";
    cin >> num;

    // Display the integer
    cout << "Entered integer is: " << num;

    return 0;
}

Output

Enter the integer: 10
Entered integer is: 10