problem with arrays

melas · #1 10-Oct-2004, 22:38

I have to write a program with arrays, and I don't understand it very well, if there is somebody that can help me, I'll be glad to send the code, to have it checked

LuciWiz · #2 11-Oct-2004, 00:03

Just post your code or attach your files and we'll see what we can do for you

Kind regards,
Luci

melas · #3 11-Oct-2004, 04:57

there is a fatal error

LuciWiz · #4 11-Oct-2004, 05:43

Quote:

Originally Posted by melas

there is a fatal error

This must be it:

CPP / C++ / C Code:

 p[n] = p[NUM_PRIMES];

Your array has a length of NUM_PRIMES (0,..., NUM_PRIMES -1). You can't access p[NUM_PRIMES]:

CPP / C++ / C Code:

int p[NUM_PRIMES] = {2, 3};

May I also say I don't really follow your logic?

CPP / C++ / C Code:

 void generatePrimes(int p[], int numToGenerate)  
{
    int i, num, n;
 
    if (isPrime(num, p, n) == 1)
       numToGenerate = num;
       p[i] = p[n];
}

What would i be here? You don't assign it a value...
Also, what is this line suppose to do? (in the same function)

CPP / C++ / C Code:

numToGenerate = num;

I see you pass NUM_PRIMES as the second argument...
Maybe you should give it a second thought, huh? :-D

Best regards,
Luci

melas · #5 11-Oct-2004, 10:45

Luci I'm sorry I did not explain myself, here is what I'm supposed to do: (see attachment)
thanks, David

LuciWiz · #6 12-Oct-2004, 04:18

Ok, but this doesn't change anything.... The mistake(s) I pointed out is obvious: you pass the length of your array and that causes the fatal error.
Maybe I wasn't to clear

Kind regards,
Luci

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problem with arrays

here is the code

problem