Program to print all even digit from a number using recursion in C++.

Solution

#include <iostream>

using namespace std;

void calculate(int n){
 
    if(n == 0)
        return;
    
    calculate(n / 10);
    if((n%10)%2==0)
    cout << n % 10 << endl;
 
}
 
int main()
{
    int n,ans;
    cout<<"Enter a number :- ";
    cin>>n;
    calculate(n);
    return 0;
}

Output :

Enter a number :- 1453
4