I’m trying to return a question if user inserts an invalid input using C++. I’m using goto statement but the problem is it keeps looping the question over and over again not allowing the user to input anything in the command prompt.

Here’s my code:

#include <iostream>
#include <cmath>
#include<bits/stdc++.h>

using namespace std;

int main()
{
    int human_years, dog_per_human_age, dog_years;

    starthere:

    cout << "How many years ago did you buy your dog?" << endl;
    cin >> human_years;
    if (cin.fail() || std::isnan(human_years))
    {
      cout << "Non numerical value inserted! Please try again.n";

      goto starthere;
   }
    else {

    dog_per_human_age = 5;
    dog_years = human_years * dog_per_human_age;

    cout << "Your Dog is " << dog_years << " years old.";

    return 0;

    }

}

[Invalid Input SnippetValid input snippet](https://i.sstatic.net/bZWKz3sU.png)

I’m trying to return a question if user inserts an invalid input using C++. I’m using goto statement but the problem is it keeps looping the question over and over again not allowing the user to input anything in the command prompt.