do-while loop for data validation problem

[dacoolest]

I have been trying to use the do-while loop to validate an int data input and following is the code i have written.

#include <iostream>
using namespace std;

void main()
{

	bool check = false;
	int input = 0;

	
	
	cout << "Please enter the age: ";
	cin >> input;

	do 
	{
		if (!cin)
		{
			check = true;
		}

		cout << "Invalid data, please re-enter: ";
		
		cin >> input;
	
	}while (check==true);

	system("PAUSE");
}

This infinitely executes the cout statement inside the loop without re-prompting to enter data again. Please help me to get it working. Thanks :)

[tripydevin]

do 
{
        if (input)
		{
			check = true;
		}
        else
        {
		cout << "Invalid data, please re-enter: ";
		cin >> input;
        }
}while (check==true);

This should work for you.