# Write a program to change a float number to an int number without using python methods?

Welcome to the forums.
Do you have any code to post/what have you written so far?

Is there a specific lesson that this Q is attached to?

this is task. i know any integer numers to change float like 13 / 1 = 13.0
but i need reverse. how?

Without a built-in method youâ€™d have to build a function yourself to do this to replicate the functionality of the method youâ€™re trying to avoid.

You might have to get clever about using some deeper tools to get it done (but itâ€™s too vague to know just from the prompt, this is either an advanced exercise or a simple one). Or conversely, it could just be a thought exercise if itâ€™s particularly no â€śfloat methodsâ€ť but if you could use other built-in methods this simplifies it greatly.

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i know solution is simple .%, /, // i have to use this operators. and i do not know howâ€¦

Ok so itâ€™s just a mathematical issue then, itâ€™s a matter of working out the algebra. Just start from the fact that any integer is some `k` = `n * d` where both n and d are integers. It follows that `d` divides k and so forth.

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show example if u know

The idea of the forum is to be constructive instead of giving answers, feel free to show some attempts at your work and we can provide feedback!

Programming involves a lot of discrete and number theory problems, so working it out (even if wrong) is really a big part of the battle.

But as an example of the previous one:

``````6 is an int
it can also be represented as
2 x 3
or
1 x 6
``````

As a reminder the modulo operator shows the remainder that would happen in division

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i tried a lot but i can not find

Thatâ€™s ok! show us some work and thought process, we can nudge it towards the answer.

One more hint:

``````>>> 2 == 2.0
True
``````

look i know methods like int(), round(), math.floor(), math.trunc(). but in this case i can not use methods

Yes but have you tried manipulating numbers to build it up without methods?
The 2 hints currently are:

1. division can be expressed as multiplication
2. you can compare a float to an int and have it check for equality

Try using these 2 hints to do something and if it doesnâ€™t work let us know (show us how you get stuck with this idea)

random float number is 13.0. every time i use every operator the results type ise float. but i need integer.

Considering you know the integer factors that build up to thirteen, is there a way you can write a function that collects these? (think about it, try it)

Written more generally, you have your original number x and itâ€™s an int, you know a and b are factors that divide it perfectly and you can check them against integers.

For inspiration maybe look up how simple is_prime function checks are done.

i know what u mean. but it is not answer with ==.

Are you sure? There can be more than one answer. I can think of one with `==`.

Have you considered using loops?

i know loops but my team is new and loop is not permit use because our loop lesson after 1 month. thanks a lot