rona.cpp

#include <iostream>
using namespace std;

int main()
{
    int num, c, d, e;
    
    do {
        cout << "Enter a 2 digit numbers:"<< endl;
        cin >> num;
        int a = num / 10;
        int b = num % 10;
        
        if (num >= 10 && num <= 100) {
            c = a + b;
            d = a - b;
            e = a * b;
            cout << "chibur:" <<  c << endl;
            cout << "chisur:" << d << endl;
            cout <<  "kefel:" << e << endl;
            break;
        }
    
        cout << "Input must be in double digits!" << endl;
        
    } while (num < 10 || num > 100);
    
    return 0;
}