Question

In C program

#include<stdio.h>

Write a program to simulate a pick-5 lottery game.

Your program must generate and store 5 distinct random numbers between 1 and 9 (inclusive) in an array.

The program prompts the user for:

• an integer random seed
• five distinct integers between 1 and 9 (which are stored in another array)

The program then compares the two arrays to determine if they are identical.

If the two arrays are identical, then the user wins the game.

otherwise the program outputs the number of matching digits and their position in the array.

For Example:

Enter an integer random seed: 45
To play the Pick-5 game, enter five integers bewteen 1 and 9 (inclusive): 1 2 3 4 5

You didn't match any numbers!
The winning numbers are: 6, 3, 5, 1, 4

Enter an integer random seed: 45
To play the Pick-5 game, enter five integers bewteen 1 and 9 (inclusive): 6 3 1 2 3

You only matched 2 numbers.
Your numbers matched the Pick-5 numbers at position(s): 0, 1
The winning numbers are: 6, 3, 5, 1, 4

Enter an integer random seed: 45
To play the Pick-5 game, enter five integers bewteen 1 and 9 (inclusive): 6 3 5 1 4

Congratulations!!! You WIN!!!
The winning numbers are: 6, 3, 5, 1, 4

Answer 1

Here is the code with comments (screenshot is also attached) :

#include <stdio.h>
#include <stdlib.h>
int main(int argc, char const *argv[])
{
   int seed;
   int random_array[5]; // this array will store random array
   int user_array[5]; // this array will store user's input array
   int index[5]; // this will store indexes at which values matches, it is initialized to -1 initally
   printf("%s","Enter an integer random seed: ");
   scanf("%d",&seed);
   srand(seed); // this is to seed with the input value of seed
   for(int i = 0;i < 5;i++)
   {
       random_array[i] = rand()%9 + 1; // this will generate random no. from 1 to 9
       index[i] = -1; // initialize index with -1
   }
   printf("%s","To play the Pick-5 game, enter five integers bewteen 1 and 9 (inclusive): ");
   for(int i = 0;i < 5;i++)
   {
       scanf("%d",&user_array[i]);
   }
   int matches = 0; // variable which tells how many numbers matches in two arrays
   int j = 0; // j is variable which is used for index array to store matched indexes
   for(int i = 0;i < 5;i++)
   {
       if(random_array[i] == user_array[i])
           {
               index[j++] = i; // when values matches then store it to jth position of index
               // and then increment j
               matches++; // also increase number of matches
           }
   }
   if(matches == 0) // if no matches
   {
       printf("%s\n","You didn't match any numbers!");
   }
   else if(matches == 5) // if all matched
   {
       printf("%s\n","Congratulations!!! You WIN!!!");
   }
   else
   {
       printf("You only matched %d numbers\n",matches);
       printf("%s","Your numbers matched the Pick-5 numbers at position(s): ");
       for(int i = 0;i < matches;i++)
           printf("%d ",index[i]); // printing values of index array which stores indices of matched numbers
       // and there are only "matches" no. of match there loop from 0 to matches
       printf("\n");
   }
   printf("%s","The winning numbers are ");
   for(int i = 0;i < 5;i++)
       printf("%d ",random_array[i]);
   printf("\n");
   return 0;
}

Note : If you have any doubts then please comment