Thread: Unable to enter additional input after validation

Hi,

I am trying to write a program that asks the user to enter a number between 0 and 9. I also have to validate the input. That part works just fine. The problem comes in when they enter something other than 0-9. The error message displays and the prompt appears again which asks for them to enter a number between 0-9. So, the validation works like a charm. For whatever reason, however, when I tested the program I couldn't type anything at this point to input something else. Any ideas what is causing that?

Here is the code:

Code:

#include <stdafx.h>

int main ()
{

	 int user_input;

printf("Please enter a number between 0 and 9: ");
scanf("%d", &user_input);

if (user_input < 0 || user_input > 9)

{
        printf("Error: That is not a valid entry!\n");
		printf("Please enter a number between 0 and 9: ");
		scanf("%d", &user_input);
}

else printf("Thank you! You selected %d\n", user_input);
  
  return 0;
}