Lotto Numbers - Check how many matches there are. Please Help..

[mariiikar]

K. I'm kinda totally lost on how to go about this....

Here's the Question:
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Write a program that will store a list of six Lotto numbers and then invites the user to enter the latest set of Lotto numbers, including the Bonus number and checks how many matches there are for that draw.
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I don't know how to compare two arrays which is what I think I've to do but I'm not even sure about that.. Any help would be appreciated. Thanks..

[sicarie]

K. I'm kinda totally lost on how to go about this....

Here's the Question:
------------------------------
Write a program that will store a list of six Lotto numbers and then invites the user to enter the latest set of Lotto numbers, including the Bonus number and checks how many matches there are for that draw.
------------------------------

I don't know how to compare two arrays which is what I think I've to do but I'm not even sure about that.. Any help would be appreciated. Thanks..

I think the first step would be to define how you are checking for the match. Do the numbers have to match in order, or can any number match (ie if 100000 is stored, will 999991 return the 1 as a match?) And what is the Bonus number - how is that handled?

[mariiikar]

I think the first step would be to define how you are checking for the match. Do the numbers have to match in order, or can any number match (ie if 100000 is stored, will 999991 return the 1 as a match?) And what is the Bonus number - how is that handled?

Well if the numbers 1 0 0 0 0 0 were the six winning numbers and 9 9 9 9 9 1 was the numbers on the ticket i would want the 1 to be counted.

The Six winning numbers I just want stored in an array or something. I want to be able to type 7 numbers to be checked including the bonus number. But is there a way for the bonus number to be kinda separate or something?? thanx.

[RedSon]

What happens if the user gets a lotto ticket that is 1 2 3 4 5 4 and the winning numbers in the drawing are 1 1 1 1 4 4. Then how many matches are there? Do you allow both the user lotto tickets and the winning lotto tickets to repeat??

[sicarie]

Well if the numbers 1 0 0 0 0 0 were the six winning numbers and 9 9 9 9 9 1 was the numbers on the ticket i would want the 1 to be counted.

The Six winning numbers I just want stored in an array or something. I want to be able to type 7 numbers to be checked including the bonus number. But is there a way for the bonus number to be kinda separate or something?? thanx.

Yeah, definitely.

Ok, so now that you know how you want the numbers processed, you need to come up with an algorithm - a list of simple steps on how to create your result.

[mariiikar]

The six winning lotto numbers aren't going to change, so let's say they are 7, 4, 16, 21, 35, 33. They will stay the same. I don't want to generate winning lotto numbers or anything like that. But I want to type in 7 numbers to be checked against these numbers. I want the program to be able to count how many numbers match. I don't know how to compare two arrays simply. I've read about 'bool' and all this but I only want to use the iostream class or if not possible alone then two classes. Please help... Thanx

[mariiikar]

#include <iostream>
#define MAX 6
#define LOT 7
using namespace std;
 
int main()
{
    int number[MAX];
    int index,temp;
    int winnumbers[LOT];
    int match=0;
 
//gather data and put it in array    
    for (index=0;index<MAX;index++)
    {
        cout<<"Please enter the six winning lotto numbers--->    ";
        cin>>number[index];
}
 
for (index=0;index<LOT;index++)
{
     cout<<"Please enter numbers to be checked for a win         ";
     cin>>winnumbers[index];
     }
 
for(int index=0;index<MAX;index++)
{
   for(int temp=0;temp<LOT;temp++)
   {
      if(number[index]==winnumbers[temp])
      {
        match++; //you have a match in array2 for a value in array 1, so break the inner loop
 
 
 
     cout<<"There are "<<match<<" matches between the two numbers."<<endl;
 
     }
     else 
     {
     cout<<"";
     }
}
}
 
    system("PAUSE");
    return EXIT_SUCCESS;
 
}
 

Please Help.. I wanna just display the number of matches... How??

[lqdeffx]

looks like you almost got it. the only problem i see is if you have lotto numbers: 1 2 3 4 1 6 and someone had picked 1 7 8 9 10 11 12, the program will see 2 matches. This is because your inner loop sets the index back to 0 each time the outer loop iterates. Correct me if i'm wrong but i think it is a 1:1 ratio between winning numbers and picked numbers. in any case if you throw in an offset and restructure the inner array: that would be one way to solve your problem.

...
int matches = 0;
// lotto array
for( int i = 0; i < 6; i++ )
{
   // picked array
   for( int x = 0 + matches; x < 7; x++ )
   {
      if( lotto[i] == picked[x] )
      {
         int temp = 0;
 
         temp = picked[matches];
         picked[matches] = picked[x];
         picked[x] = temp;
 
         matches++;
      }// end of if
   }// end of inner for
}// end of outer for
 
cout << "Congratulations! You have " << matches << " matches!\n";
...
// exit code
 

this should work, although i haven't tested it.