Lottery Simulator in C++
Posted by Samath
Last Updated: January 07, 2021
  18183

The program should have an array of five integers named lotteryand should generate a random number in the range of 0 through 9 for each element in the array. The user should enter five digits which should be stored in an integer array named user. The program is to compare the corresponding elements in the two arrays and keep a count of the digits that match. For example, the following shows the lottery array and the user array with sample numbers stored in each. There are two matching digits (elements 2 and 4).

The program should display the random numbers stored in the lottery array and the number of matching digits. If all of the digits match, display a message proclaiming the user as a grand prize winner.

Output:

Code:

#include <iostream>
#include <cstdlib>
#include <time.h>
using namespace std;
int main(int argc, char *argv[])
{
       int lottery[5];
       int user[5];
       bool allmatch = true;
       bool nomatch = true;
       int matchcount = 0;     
  srand (time(NULL));
  lottery[0] = rand() % 10;
  lottery[1] = rand() % 10;
  lottery[2] = rand() % 10;
  lottery[3] = rand() % 10;
  lottery[4] = rand() % 10;

  for(int i = 0; i < 5; i++)
  {
         cout <<"Enter a digit between 0 and 9: ";
cin>>user[i];
              while (user[i]<0 || user[i]>9)
              {
                     cout << "Error! Entry must be between 0 and 9: ";
                     cin >> user[i];
              }
  }
cout<<endl<<"Lottery array: ";
  for(int i = 0; i < 5; i++)
  {
         cout<<lottery[i];
         cout<<"|";
  }
cout<<endl<<endl<<"   User array: ";
  for(int i = 0; i < 5; i++)
  {
         cout<<user[i];
         cout<<"|";
  }

  for(int i = 0; i < 5; i++)
  {
         if(user[i] == lottery[i])
         {
               matchcount++;
               nomatch = false;
         }
     
         if(user[i] != lottery[i])
         {
               allmatch = false;
         }
  }
      if(nomatch == true)
         {
              cout<<endl<<endl<<"Sorry! No Match."<<endl;
         }

         if(allmatch == true)
         {
              cout<<endl<<endl<<"Congratulation! you are the grand prize winner."<<endl;
         }
    if(matchcount != 0)
       cout<<endl<<endl<<matchcount<<" Match"<<endl;
       return 0;
}