How can I take specific user inputs in an array?

I am coding a program that converts a binary number into decimal number by doubling (Refer to: https://www.wikihow.com/Convert-from-Binary-to-Decimal#Using_Doubling_sub).

If the user input is something other than 1 or 0, then its not a binary number, under that circumstance I want the loop to "break" and say something like: "Oops! Binary numbers have only 1 or 0". If not "then" the loop should continue.

Refer to the code given below for more info:

#include <iostream>
#include <iterator>

using namespace std;

int main(){
    int digitsINbinNum;
    cout << "If you don't mind. Please enter the number of digits in your binary number: ";
    cin >> digitsINbinNum;
    int binArray[digitsINbinNum];

    cout << "Enter the binary number: ";
    for(int digits = 0; digits != digitsINbinNum; ++digits){
        cin >> binArray[digits];/*<-----------Here's the part where I am trying to do that*/
    }

    return 0;
}