odd or even number testing

Bjarne Stroustrup “Programming Principles and Practice Using C++”
Chapter 3 Exercise 8
Using std_lib_facilities.h by Bjarne Stroustrup.

//	Philipp Siedler
//	Bjarne Stroustrup's PP
//	Chapter 3 Exercise 8

#include "std_lib_facilities.h"

int main()
{
	cout << "enter an integer to test if it is odd or even: ";
	int valueToTest;
	cin >> valueToTest;

	if (valueToTest % 2 == 1)
	{
		cout << valueToTest << " is an odd number\n";
	}
	else
	{
		cout << valueToTest << " is an even number\n";
	}
		
	keep_window_open();
}
Output 1:
enter an integer to test if it is odd or even: 5
5 is an odd number
Please enter a character to exit
Output 2:
enter an integer to test if it is odd or even: 4
4 is an even number
Please enter a character to exit

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