#include <iostream>
#include <cstdlib>
#include <ctime>
#include <string>
using namespace std;

int main()
{
   // remove comment on next line to see different numbers each run
   //srand(time(0));
   
   cout << "The value of RAND_MAX is -- " << RAND_MAX << endl;

   cout << "Here are 10 random numbers between 0 and 19 : " << endl;
   for (int i = 0; i < 10; i++)
      cout << rand()%20 << ' ';
   cout << endl;

   cout << "Here are 10 random numbers between 1 and 20 : " << endl;
   for (int i = 0; i < 10; i++)
      cout << rand()%20 + 1 << ' ';
   cout << endl;

   cout << "Here are 10 random numbers between 15 and 28 : " << endl;
   for (int i = 0; i < 10; i++)
      cout << rand()%(28-15+1) + 15 << ' ';
   cout << endl;

   cout << "Here are 10 random numbers between 0 and 1 : " << endl;
   for (int i = 0; i < 10; i++)
      cout << static_cast<double>(rand())/RAND_MAX << ' ';
   cout << endl;

   string str;
   cout << "Enter an integer -- ";
   cin >> str;
   cout << str << " +  17 = " << atoi(str.c_str()) + 17 << endl;

   int i;
   cout << "Enter an integer -- ";
   cin >> i;
   cout << i << " is ";
   if (abs(i) == i) cout << "positive"; else cout << "negative";
   cout << endl;
   
   return 0;
}