Storing and printing 10+ digit integer in c++

Question

I\'m using cout to print digits to the console. I am also storing values of up to 13+billion as a digit and doing computations on it. What data type should I use?

Wh

Answer 1

It's a good idea to understand the range limits of different sized types.

A 32 bit type (on most 32 bit platforms, both int and long are 32 bit) have the following ranges:

signed: -2,147,483,648 to 2,147,483,647
unsigned: 0 to 4,294,967,295

While 64 bit types (typically long long's are 64 bit, on most Unix 64 bit platforms a long is also 64) have the following range:

signed: -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
unsigned: 0 to 18,446,744,073,709,551,615