scanf in C leading to infinite loop [duplicate]

Question

I am trying to write a simple c program that takes input using scanf, and ensures that this input is an integer. To do this I have written a recursive function, but the function goes into an infinite loop if I enter a non-integer character. I've attatched the code below.

#include <stdio.h>

int getInput() {
  int success = 0;
  int input;

  printf("Enter a positive integer: \n");
  success = scanf(" %d", &input);

  if (success == 0 || input < 0) {
    return getInput();
  }else return input;
}