Accessing an array dynamically....

LAURENT* · 07-26-2014

I want to access the elements of my array dynamically. So far I've only figured out how to do this manually. if I tried it like this my code would work but there should be a better way right?

Sorry if I appear green, I just have holes due to being self taught. Thanks all who help.

**laserlight** · 07-26-2014

What do you mean by "access the elements of my array dynamically" and "manually"?

LAURENT* · 07-26-2014

This is how I would do it manually.

int XA [4];
XA[2] = 3;
int Z = XA[2];

I need to learn how to access the array space 1 by 1 automatically.

int

**laserlight** · 07-26-2014

Ah. Have you learned how to use loops?

LAURENT* · 07-26-2014

I only know how to use 3 for while and do while.

**laserlight** · 07-26-2014

Any of them will work, though a for loop would often be most appropriate when working with an array since it is common to loop from index 0 to the last valid index of the array.

**immy** · 07-26-2014

If you want any further help on this topic you can add me on skype if you like.

skype: imohamme5

LAURENT* · 07-26-2014

Could I get a small example how this would be done?

**laserlight** · 07-26-2014

Originally Posted by immy

If you want any further help on this topic you can add me on skype if you like.

You are certainly free to do so, but I note that assistance provided via this forum is subject to peer review, hence mistakes or omissions in help provided are more likely to be corrected.

Originally Posted by LAURENT*

Could I get a small example how this would be done?

Code:

#include <iostream>

int main()
{
    int numbers[] = {1, 1, 2, 3, 5, 8};
    const std::size_t numbers_size = sizeof(numbers) / sizeof(numbers[0]);
    for (std::size_t i = 0; i < numbers_size; ++i)
    {
        std::cout << numbers[i] << std::endl;
    }
}

**Elysia** · 07-26-2014

I also note that in C++11, you can also do:

Code:

#include <iostream>
 
int main()
{
    int numbers[] = {1, 1, 2, 3, 5, 8};
    for (auto && e : numbers)
        std::cout << e << std::endl;
}

LAURENT* · 07-26-2014

Wow..... I feel dumb for not thinking of doing that. Alright thanks I'll ask more questions as I see fix.

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