#include <iostream.h> // The C++ input and output definitions.

void main(void)
{
  // declarations:

  int i; // A general purpose integer

  // executable statements:

  // Get integer i from the user:
  cout << "Enter an integer: ";
  cin >> i;

  // Print a message whether i is zero;
  if (i == 0)
    {
      cout << "You entered zero.\n";
      cout << "Have a nice day!\n";
    }
  else if (i > 0)
    {
      if(i == 1) cout << "You entered one.\n";
      cout << "You entered a positive number.\n";
      else if (i/2*2 == i && i != 2) cout << "The number is divisible by 2.\n";
      else if (i/3*3 == i && i != 3) cout << "The number is divisible by 3.\n";
      else if (i/5*5 == i && i != 5) cout << "The number is divisible by 5.\n";
      else if (i/7*7 == i && i != 7) cout << "The number is divisible by 7.\n";
      else if (i < 11*11 ) cout << "The number is prime.\n";
      else cout << "The number is too large to check for being a prime.\n";
    }
  else
    {
      cout << "You entered a negative number.\n";
      cout << "Negative numbers are not supported.\n";
    }
}