Tutorial 2 section A part D

#include <iostream>

using namespace std;

int main()
{
        int value = 0;
        while (1){
            cout << "Enter a number between 1 & 20: ";
            while (!(cin >> value)){
                cout << "Ending program. only integer values between 1 and 20 accepted" << endl;
                cin.clear(); //clear internal error flags
                cin.ignore(numeric_limits<streamsize>::max(), '\n');
                return 0;

            }
            if (value > 0 && value <= 20){


                int i = 0; int j = 0;
                int count = 1;

                for (i = 0; i < value; i++)
                {
                    for (j = 0; j < value; j++)
                    {
                        cout << count << "\t";
                        count++;
                    }

                    cout << endl;
                }
            }
            else{
                cout << "Ending program. Only integer values between 1 to 20 are accepted ";
                cout << endl; //cout << "\n"
                return 0; //this will end the program if wrong input is given
                cout << endl;
            }
        }
        return 0;
}