Fibonacci generator negatives?

Question

My first programme. After the 48th iteration it starts throwing negatives. Obviously that's wrong. Why is it doing this?
https://code.sololearn.com/cBxK7M33qOlT/?ref=app

Answer 1

An integer data type that is at least 8 bytes long, although it says at least, most compiler will use 8 bytes. The unsigned means it only holds positive number. Basically it can hold bigger number

Answer 2

Unfortunately data types cannot hold values up to infinity.

Answer 3

Because int can't hold numbers that are so big ;)

Answer 4

Is there a different type of variable for big integers?? I don't believe that C++ can't handle large numbers! Or is it just in this mobile compiler??

Answer 5

Joseph Hardie
You could use unsigned long long int, but even if you do so, it won't last hundreds of iteration. Not just C++, but also almost every programming languages doesn't directly support an integer data type that is bigger than 8 bytes

Answer 6

Unsigned long long int? What's that?

Answer 7

I'll try that!