Lottery Application using rand() & srand()

// Programming Assignment : Lottery Application
// Programming Environment: Bloodshed
// Program Description: This program generates a non repetitive random numbers
// for the lottery Application using rand() & srand(). It asks user their choice
// of lucky numbers which is unique. Then it processes the result how many matches
// the user has and gives congratulations if they manage to match 5 out of 5.
// Date/Time: 2/25/2010  3:08:47 AM
//---------------------------------------------------------------------------
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
using namespace std;

//---------------------------------------------------------------------------
// Named Constants
const int MAX_ELEMENTS = 5;
//---------------------------------------------------------------------------

//---------------------------------------------------------------------------
   bool Unique_Lottery_Value(int[], int, int);
//---------------------------------------------------------------------------

//---------------------------------------------------------------------------
int main (void)
{
    cout.setf (ios::fixed, ios::floatfield);
    cout.setf (ios::showpoint);
    cout.precision (2);

    int Lottery[5];
    int User[5];  
    for(int i = 0; i < 5; ++i) {
        Lottery[i] = rand() % 10;      
    }
      
    int current_index = 0;
    unsigned seed = time(0);
    srand(seed);
    while (current_index < 5) {    
        int lottery_value = rand() % 10;      
        // Unique_Lottery_Value(Lottery, current_index, lottery_value);
        // To get computer unique value
        if(Unique_Lottery_Value(Lottery, current_index, lottery_value)) {          
             Lottery[current_index] = lottery_value;                  
             ++ current_index;          
             }  
    }
    // Getting the unique value from the  user.
    int Last_Index = -1;
    // Value is 0 after one iteration!! (Maintains the index of last element loaded).  
    int Search_Index; // Used to check or search array for duplicates.
    int User_Num; // Value entered by user.
  
    for (int count = 1; count <= MAX_ELEMENTS; ++count) {
        cout << endl << "Enter Your Lucky Number: ";
        cin >> User_Num;
      
        if (Last_Index >= 0) {
            Search_Index = 0;
            while (Search_Index <= Last_Index && User_Num != User[Search_Index]) {
                  ++ Search_Index;
            }
            if (Search_Index > Last_Index) {
               User[Search_Index] = User_Num;
               ++ Last_Index;
            } else {
                   cout << endl << "Your Input Duplicates Entry Number"
                        << " "<< (Search_Index + 1) << " " << "Please Re-Enter" << endl;
                   --count;
            }
        } else {
               User[0] = User_Num;
               Last_Index = 0;
        }
    }        
        
   //This was my first attempt to ge the unique value from the user
  /*
   do {
   cout << endl << endl << "Enter your 1st lucky num: ";
   cin >> User[0];
   }
   while (User[0] > 9 || User[0] < 0);


   do {
   cout << endl << "Enter your 2nd lucky no without repetition: ";
   cin >> User[1];
   }
   while (User[1] == User[0] || (User[1] > 9 || User[1] < 0));

   do {
       cout << endl << "Enter your 3rd Lucky no without repetition: ";
       cin >> User[2];
   }
       while (User[2] == User[1] || User [2] == User[0] || (User[2] > 9 || User[2] < 0) );
    
       do {
          cout << endl << "Enter your 4rd Lucky no without repetition: ";
          cin >> User[3];
       }
       while (User[3] == User[2] || User[3] == User[1] || User [3] == User[0] || (User[3] > 9 || User[3] < 0));
    
          do {
          cout << endl << "Enter your 5rd Lucky no without repetition: ";
          cin >> User[4];
          }
          while (User[4] == User[3] || User[4] == User[2] || User [4] == User[1] || User [4] == User [0] || (User[4] > 9 || User[4] < 0));  
        
    
       */


    cout << endl << endl << "The Numbers you Entered: ";  
    for(int i = 0; i < 5; ++i) {
        cout << User[i] << "  ";      
    }
    cout << endl << "Today's Winning Numbers: ";
    for(int i = 0; i < 5; ++i) {
        cout << Lottery[i] << "  ";      
    }
    int match = 0;
    for (int i = 0; i < 5; ++i) {
        for (int j = 0; j < 5; ++j) {
            if (Lottery[i] == User[j]) {
            ++ match;
            }
        }
    }
    cout << endl << endl << "Your Luck Today!!" << endl << "You Managed to match: "
         << match << "/5.";
  
    if (match == 5) {
        cout << endl << "Congratulations: You won $99,000,000";
    }
    cout << endl << endl << endl << "Depress Any Key to Continue...";
    _getch ();
    return 0;
}
//---------------------------------------------------------------------------
// Function Definitions follow.
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
   // Checks if the random numbers generated in unique or not.
   bool Unique_Lottery_Value(int array[], int index, int lottery_pick){
        if(index > 0) {
            for(int i = 0; i < index; ++i) {
                if (lottery_pick == array[i] || lottery_pick == array[i - 1] || lottery_pick == array[i + 1]){
                    return false;                
                }
            }
        }
        return true;      
   }
//---------------------------------------------------------------------------

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