Thread: Passing an array to main:

I just want to send 6 random numbers to main from the random Generator function. I know I how to print them in the function and just simply call the function in main but I need the numbers.

I am making a lottery game. Guess 6 numbers and if you get all 6 6 you win whatever and if you guess 2 you win something too. In the end it will loop until the computer matches the guessed lotto picks. Just showing how hard it is to guess correctly and win.

Code:

 #include <iostream>
#include <ctime>
#include <cstdlib>

using namespace std;

int random_Generator(int randNum[])
{

    srand((unsigned)time(NULL));
    
    for (int i=0; i<6; i++) {
        randNum[i] = rand() % 49;
        
    }
    
}

int main(int argc, const char * argv[])
{
    int numbers[7];

    for (int i=0; i<6; i++) {
        
    numbers[i]=random_Generator(numbers);
   
    cout<<numbers[i]<<endl;
        
    }
    return 0;
}

I cannot wait till I stop making these dumb mistakes.

A lightbulb just went off when you mentioned the compiler warnings. Sometimes I do not know what they mean, to only find out later it was literally giving my the answer to my question.

C++ starts tomorrow, hope it severs me good!

Thanks for the help...

@lazerlight, good suggestion. Makes it easier to read too.
If I am suppose to output random numbers, which I am. Why is the first number always 30?

Code:

 #include <iostream>
#include <ctime>
#include <cstdlib>

#define SIZE 6

using namespace std;

void random_Generator(int randNum[],int size)
{

    for (int i=0; i<SIZE; i++) {
        randNum[i] = rand() % 49;
        //cout<<randNum[i]<<endl;
    }
    
}

int main(int argc, const char * argv[])
{
    srand((unsigned)time(NULL));
    
    int numbers[7];
    
    
    for (int i=0; i<SIZE; i++) {
        
    random_Generator(numbers,SIZE);
   
    cout<<numbers[i]<<endl;
        
    }
    return 0;
}

I know where the problem is it just confusing. Please see the comment.

Code:

 #include <iostream>
#include <ctime>
#include <cstdlib>

#define SIZE 6

using namespace std;

void random_Generator(int randNum[],int size)
{
    for (int i=0; i<SIZE; i++) {
        randNum[i] = rand() % 49;
    }
}
void compareLottoNum(int lottoNum[])
{
        for (int i=0; i<SIZE; i++) {
        if (lottoNum[i]== random_Generator() { /*I know this is wrong because I need to values to pass 
                                                to random_Generator. But that will mess up what I am trying to do. I want to compare the two. I have a feeling this fun project is going to teach me more then I thought.*/
            cout<<"You won 1,000,000,000 Euro!!!"<<endl;
        }
    }
    

}


int main(int argc, const char * argv[])
{
    srand((unsigned)time(NULL));
    
    int numbers[SIZE];
    int lottoNumbers[SIZE];
    
    random_Generator(numbers,SIZE);
    
    cout<<"Enter 6 lotto numbers"<<endl;
    
    for (int i=0; i<6; i++) {
        cin>>lottoNumbers[i];
    }
    
    compareLottoNum(lottoNumbers);
    
    return 0;
}

Code:

  compareLottoNum(random_Generator(numbers,SIZE));

This is pretty cool. I didn't know I could do this!

I will figure this out tomorrow. I have to go to bed.

I almost got it but main has three errors. It was fine until I made the switch statement.
The errors are:

Code:

Parse Issue
       Expected '(' for function-style case or type construction
Parse Issue
       Expected ';' at end of declaration
Parse Issue
       Expected '}'

How when I add ; where it wants and add two more } int lottoNumbers still has a warning in Main. Also what I find weird is that the } after return 0 now has to have };

Code:

 #include <iostream>
#include <ctime>
#include <cstdlib>

#define SIZE 6

using namespace std;

void random_Generator(int randNum[])
{
    srand((unsigned)time(NULL));        //creates a seed for rand()
    
    for (int i=0; i<SIZE; i++) {
        randNum[i] = rand() % 49;       //produces random number 0-49
    }
}
void compareLottoNum(int lottoNum[])    // lottoNum[] gets the user picked lotto numbers
{
    int numbers[SIZE];              // will be used to store the random numbers in this function
    int count = 0;
    random_Generator(numbers);  /*random numbers are called and below compared against the users    numbers*/
    
    for (int i=0; i<SIZE; i++){
        
            if (lottoNum[i]==numbers[0]||numbers[1]||numbers[3]||numbers[4]||numbers[5]) {
                 count++;
            }
            if (count<=1) {
                cout<<"You lost, maybe nexted time"<<endl;
        }
        
        switch (count) {
            case 2:
                cout<<"You got two numbers right, you won 5 Euro"<<endl;
                break;
            case 3:
                cout<<"You got three numbers right you won 20 Euro"<<endl;
                break;
            case 4:
                cout<<"You got four right, you won 2,000 Euro"<<endl;
            case 5:
                cout<<"You have won 100,000 Euro"<<endl;
            case 6:
                cout<<"JACKPOT!!\n You won 1,000,000,000 Euro!!!"<<endl;
                break;
            default:
                break;
        }
    

int main(int argc, const char * argv[])
{
    
    int lottoNumbers[SIZE];
    
    cout<<"Enter 6 lotto numbers"<<endl;
    
    for (int i=0; i<6; i++) {
        cin>>lottoNumbers[i];
    }
 
    compareLottoNum(lottoNumbers);

    return 0;

}

Yes I wanted to compare them and if they were equal count++.

Ahh ok I didn't know Last on first on applied to arrays. I thought since I was using the for statement everything would be called in order. Am I misunderstanding you?

Code:

 if (lottoNum[i]== numbers[5]||numbers[4]||numbers[3]||numbers[2]||numbers[1]||numbers[0]) {
                 count++;
            }

This is what I did to fix it, or at least I think it did. I am stilling getting the same errors. C++ started today so I suppose I should start digging in the text book more. I'll keep at this program and figure it out hopefully.

Once I get the program to work I'll add some logic so it doesn't check twice for the same thing. It will also tell the user how many times the computer had to generate random numbers until they got 2,3,4,5,6 number correct. Just showing someone how hard it really is to win the lottery. Maybe I'll compare it to the Permutation of the lottery.