#include <cstdlib>
#include <iostream>

using namespace std;
const int MAX=4;

void numberthanten(int number)
{
    if(number>10){
          cout << "The number you entered is bigger than 10 !" << endl;
    }else if(number==10){
          cout << "The number you entered is exactly 10 !" << endl;
    }else{
          cout << "The number you entered is smaller than 10.." << endl;
    }
}
void twicethanten(int twice)
{
    if(twice>10){
          cout << "is bigger than 10 !]" << endl;
    }else if(twice==10){
          cout << "equals 10 !]" << endl;
    }else{
          cout << "is also smaller than 10 !]" << endl;
    }
}
void check(char input[MAX], int i)
{
          if(!isdigit(input[i]))
          {
              cout << "NO letters, please try again!: ";
              cin.clear();
              cin.ignore(99,'\n');
              cin.get(input, MAX);
          }
}
int main(int argc, char *argv[])
{
    char input[MAX];
    int transfer[4];
    int twice;
    
    cout << "Please enter a number [3 digits]: ";
    cin.get(input, MAX);
    
    for(int i=0; i<4; i++)
    {
                 while(!isdigit(input[i]))
                 {
                     check(input, i);
                     i = 0;
                 }
                 if(isdigit(input[0]) && isdigit(input[1]) && isdigit(input[2]))
                 {
                         for(i=0; i<4; i++)
                         {
                                  transfer[i] = input[i];
                         }
                 }
    } 

    numberthanten(transfer);
    twice = transfer * 2;
    twicethanten(twice);

     
    system("pause");
    return EXIT_SUCCESS;
}