How Can I avoid char input for an int variable?

Question

The program below shows a \'int\' value being entered and being output at the same time. However, when I entered a character, it goes into an infinite loop displaying the pr

Answer 1

#include 
#include  // for INT_MAX limits
using namespace std;
int main()
{
    int num;
    cout << "Enter a number.\n";
    cin >> num;
    // input validation
    while (cin.fail())
    {
        cin.clear(); // clear input buffer to restore cin to a usable state
        cin.ignore(INT_MAX, '\n'); // ignore last input
        cout << "You can only enter numbers.\n";
        cout << "Enter a number.\n";
        cin >> num;
    }
}