Multiplying large numbers?

Question

https://code.sololearn.com/cdXr7GI7JDu0/?ref=app

How can I make this code spit out a hundred digit integer properly?

If you have a better method of doing so, share it, but for clarification, I'll tell you what this function should do:

The function should generate a random number with as many digits as the number in the parameter.

So if the param is 5, it'll generate a 5 digit random number.

The problem is when the parameter is a large number, in my example I used 100. I tried using 1LL but it didn't work.

Answer 1

Does digit by digit work by you?

Then randomize digits and output them one after another as an array or string.

If you need to calculate with such a number, you'd have to write a code that does it (integer) digit by digit, like in elementary school on paper.

One related example of my own:

https://code.sololearn.com/cV3o3NWxVZ11/?ref=app

Answer 2

I was hoping to store it as a single int, as I could easily do it using a vector. Lol

Answer 3

A promising keyword for googling what's out there would be 'big num C++'.