#include <iostream>
#include <cstdlib>  // Needed for srand(), rand(), and RAND_MAX
using namespace std;

int main()
{
    const int super_small = RAND_MAX / 5;  // Integer division!
    int seed, num;
    
    cout << "The rand() function returns a random integer between 0 and "
        << RAND_MAX << endl;
    cout << "Enter an integer seed for the generator: ";
    cin >> seed;
    cout << "\n";
    srand( seed );
    
    num = rand();
    if ( num < super_small )
        cout << num << " is super small";
    else if ( num < 2 * super_small )
        cout << num << " is small";
    else if ( num < 3 * super_small )
        cout << num << " is midsize";
    else if ( num < 4 * super_small )
        cout << num << " is big";
    else
        cout << num << " is super big";
        
    cout << "\n\nTo get a random number in [0,1], we divide by RAND_MAX:\n";
    cout << float( num ) / RAND_MAX;  // Real number division!    
        
    cout << "\n\n"; system( "PAUSE" );
    return( 0 );
}