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

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  • Last Updated : 09 May, 2022
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The given task is to take an integer as input from the user and print that integer in C++ language. In below program, the syntax and procedures to take the integer as input from the user is shown in C++ language. 

Steps:

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

Syntax:

cin >> variableOfXType;

where >> 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 type int. The syntax of cin method becomes as follows then: 

Syntax:

cin >> variableOfIntType;
  • This entered value is now stored in the variableOfIntType.
  • Now to print this value, cout method is used. The cout method, in C++, prints the value passed as the parameter to it, on the console screen. 

Syntax:

cout << variableOfXType;

where << 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 type int. The syntax of cout() method becomes as follows then: 

Syntax:

cout << variableOfIntType;
  • Hence, the integer value is successfully read and printed.

Program: 

C++




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