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How can my random number generator come up from lowest to highest in C  ? [closed]
/*This app will give you your lotto max numbers!*/
#include <iostream>
#include <iomanip>
#include <cstdlib>
using namespace std;

int main()
{
    int lotto[7];
    //allows users to input a seed, that way the tickets wont be
    //generated the same if    they want two.
    unsigned seed;
    cout << "Enter seed ";
    cin >> seed;
    srand( seed ) ;

    //greeting
    cout << "*** LOTTO  MAX  INSTA  PICK ***" << endl;
    cout << " " << endl << endl;

    cout << "Your Insta Pick Numbers" << endl;
    cout<< " " << endl << endl;

    //initilizes the counter and making sure the amount of numbers does not exceed 21
    for (int counter = 1; counter <= 7;++ counter)
    {
        //outputs numbers between 1 and 27 with 7 numbers in each row
        cout << setw(1) << (1 + rand() % 49)  << " " ;
        //stops the counter for each row
        if (counter % 7 == 0)
            cout << endl;
    }

    //space in between the numbers and tag numbers
    cout<< " " << endl << endl;
    cout << "Your Tag Numbers" << endl;
    cout << " " << endl << endl;

    //initilizes counter and makes sure numbers dont go over 6
    for (int counter = 1; counter <= 6; ++ counter)
    {
        //sets the numbers between 0 and 9 and outputs them
        cout << setw(0) << (0 + rand() % 9)<< " " ;

        //stops the counter
        if (counter % 9 == 0)
            cout << endl;
    }

    cout << " " << endl << endl;

    //end message
    cout << "Thank you for playing!! please check ticketn a year minus a day   from date of purchase" <<endl;
};

std::set<int> numbers;
while(numbers.size() < 7)
{
    numbers.insert((rand() % 49) + 1);
}