[HARD CHALLENGE] Infinadd

Question

Hello everyone ! I am a student in a French informatic school (Epitech), and I wanted to share some exercises I coded during my first month.
The first here:
Create program that is able to add two numbers of infinite length (add a number with 100 digits and one with 2, for example).
Prototype: string infinadd(string str1, string str2)
-Types allowed: int, string, char (+pointers)
-Only 20 lines by function
-System functions are not allowed except what is needed to print output (String functions are allowed).

Answer 1

https://code.sololearn.com/cTeO3C6896xL/?ref=app
https://code.sololearn.com/c0U2BqoJSrO1/?ref=app

do you sort of mean like this? I found a worksheet that explains a large integer calculator awhile ago.

Answer 2

Text Addition
https://code.sololearn.com/cTJk6oo8Dqpv/#py

Answer 3

@Volts I concede that I did use python instead of the specified languages, but why cant I use int, how will you ever go from str to a number?

Answer 4

Example of input:
"81763389161628926271936164190165172926" +
"7191716515181917101018161619201817"
Numbers are in a string type because, obviously, they can't fill in an integer. :)
Tip: How do you calculate two big numbers with only a sheet of paper and a pen ?

Answer 5

@kurwius This is the nearest from what I expected !;)
All rules are respected (except function (main) > 20 lines), and it seem to work with the five tests I did !
If someone wants to tests his code:
1+1 (2)
1+10 (11)
999999999999 + 100000000001 (110000000000)
81763389161628926271936164190165172926 + 7191716515181917101018161619201817 (81770580878144108189037182351784374743)
and
14159265358979323846264338327950288419716939937510 + 58209749445923078164062862089986280348253421170679 (72369014804902402010327200417936568767970361108189)

So @kurwius, you passed all the tests and you are near to respect all the rules, congralutations !

Answer 6

@Louis Well, in the tags, I precised C#, C++ and Java, because I said on the last line "System functions are not allowed", so: list, map, range and int function are not allowed. But your algorithm is okay, so you partially succeeded the challenge :)

Answer 7

@jay The only allowed types are int, string and char, so if you use POO, you create another types that aren't allowed !

Answer 8

@Louis I don't know if char type exists in Python, if it is the case, a number can be converted to str with + '0', and a str can be converted to number with - '0' ;)
EDIT: When I did it, it was in C, and the only authorised functions were write, malloc and free :)

Answer 9

@kurwius That's normal, if you want to try negative numbers, you'll have to do the infinsub !