Uhh

#include <iostream>
using namespace std;

int asc(int num){
    int freq[10] = {0};

    while (num)
    {
        int d = num % 10;
        freq[d]++;
        num = num / 10;
    }

    int result = 0;
    for (int i = 0 ; i <= 9 ; i++)
    {
        if (freq[i])
        {
            result = i;
            freq[i]--;
            break;
        }
    }

    for (int i = 0 ; i <= 9 ; i++)
        while (freq[i]--)
            result = result * 10 + i;

    return result;

}
int desc(int num){
    int freq[10] = {0};

    while (num)
    {
        int d = num % 10;
        freq[d]++;
        num = num / 10;
    }

    int result = 0;
    for (int i = 9 ; i <=0 ; i--)
    {
        if (freq[i])
        {
            result = i;
            freq[i]--;
            break;
        }
    }

    for (int i = 9 ; i >=1 ; i--)
        while (freq[i]--)
            result = result * 10 + i;

    return result;
}
int main(){

	int n,x;
	cout<<"Input integer: ";
	cin>>n;
	cout<<"Original number was "<<n<<endl;

	while(true){
		int dif = desc(n)-asc(n);
		int dif2= desc(dif)-asc(dif);

		x++;

		if(dif2!=dif)
			dif2=n;
		else
			cout<<"Chain length is: "<<x;

		}
	}