Validation check if the value entered is the number 2

16JesusValidateSingleNo.cpp

// Video: https://www.youtube.com/watch?v=kQIkWDf2XXE&feature=youtu.be
#include <iostream>
#include <iomanip>
#include <string>

using std::cout;
using std::cin;
using std::endl;
using std::string;

bool checkIf2(int numIn)
{
	// Error checking algorithm
	while(!(cin >> numIn) || (numIn != 2))
	{
		// Explain error
		cout << "ERROR: Only 2 is an acceptable input: ";
		// Clean input stream
		cin.clear();
		// Discard previous input
		cin.ignore(132, '\n');
	}

	return true;
}


int main() {

	//Variables
	int num;

	// Ask user to enter a number
	cout << "Enter the number 2: ";

	cin >> num;

	if(checkIf2(num))
	{
		cout << "The number is 2." << endl;
	}


	return 0;
}