Factors of a Number

Question

I want to write a function which can return the factors of a given number as an array...I know how to write the factors program but I don't know how to return the factors as an array.
ex.(not correct code)
function(number)
return factors;

I know I can use vectors in C++.. but I don't want to overload the '<<' operator in order to output the array

Answer 1

Here
https://code.sololearn.com/cuUA3BwZ3eZL/?ref=app

Answer 2

int factors(int number) {
int factor[];
for(int i = 1; i <= number; i++)
if(number % i == 0)
factor.push(i); // imaginary push method
return factor;
}

I want something like this in C or C++
C++ - vectors..but cout can't output the full array

Answer 3

@John Wells, an example code would be great!
Thanks!

Answer 4

@Swim, I already knew that.. but I want a simpler way like in javascript where you can console.log() the whole array without any problems. I just want this for my code 'Common Functions(C++)' which you can see in my codes

Anyways, Thanks!

Answer 5

@~ swim ~
Thank you so much, for the answer in detail, it really helps a lot, learned more things now, curiosity answered, and yes, I am keeping in mind that note for not mixing the two allocation methods for my future references : )

Huge Thanks!

Answer 6

@~ swim ~
Much thanks again! I think I will stick with the new...delete way instead, at least for now, I really haven't touched the mysterious land of C much at all, I guess I'll take the safe route until I have better understanding of C language, later : )

(Edit)
@Cool Codin I am sorry about this question in your thread, I was just following the discussion of the three of you, then I saw @John Wells' code, thus the question came to mind. I hope you can understand : )

Answer 7

@Cool Codin, @~ swim ~, @John Wells can someone help me understand the difference between free and delete, where and when we should use either one, please?

Answer 8

I updated to allocate 20 array elements at a time.

Answer 9

If you truly want JavaScript features, make a class to provide them. You can base it off one of the built-in classes of c++ and provide your push/pop, shift/unshift, <<, etcetera.

Answer 10

I'd generate the factors. Allocate storage for them plus a count of how many. Store the count first followed by the factors and return the pointer.

Answer 11

Since I don't happen to have a factor function handy, I'll toss a few random numbers. Give me a bit to code.

Answer 12

It is currently limited to max of 100 factors.

Answer 13

Actually, with realloc you could allocate 100 via pointer and increase when it was used up to avoid array/copying.