/* lottery.cpp
 * Anthony Larrain
 * Spring 2006, csc309
 *
 * Program will generate 6 distinct integers in the range
 * [1,UPPER], where UPPER is a global variable equal to 53
 * 
 */

// for rand() and srand() 
#include <cstdlib> 
// for time() 
#include <ctime>
#include <iostream>
#include <string>
// for ostringstream class.
#include <sstream>

using namespace std;

string quickPick();
string toString(bool lotto []);

const unsigned int UPPER = 52;
const unsigned int COUNT = 6;

int main(){
    
    cout << "Your lotto numbers are ... " << endl;
    cout << quickPick() << endl;
    system("pause");
    return 0;
}

string quickPick(){
    srand(time(NULL));
    // using initalizer list
    // itialize all cells to false
    bool lotto [UPPER + 1] = {false};   
    
    for(int i = 0; i < COUNT;){
        int rnum = rand() % UPPER + 1;
        if(lotto[rnum] != true){
            lotto[rnum] = true;
            ++i;
        }        
    }
    return toString(lotto);
}

string toString(bool lotto [] ){
    const char space = ' ';
    ostringstream numbers;
    for(int i = 1; i < UPPER + 1; i++){
        if(lotto[i]){
            numbers << i << space;
        }
    }
    return numbers.str();
}