C++

Forum

 
How to access ZZ in a function?

barneyTdino (6)
I'm trying to write a function to find the number of twin primes (x and x+2 are both primes) between a and b which can be any very large integer.

If I used just int, the code is like this.

1
2
3
4
5
6
7
8
9
10
11
 

int Count =0;

int twin(int a, int b)
{
    for(int i=a;i<=b-2;i++)
    if(ProbPrime(i)==true&&ProbPrime(i+2)==true)
        Count++;

    return Count;
}



I have a problem if I want my input to be of type ZZ though. I tried replacing all the ints with ZZ but it doesn't work.
Last edited on
Bazzy (6281)
What is ZZ?
barneyTdino (6)
Sorry. I am using NTL. ZZ is an arbitrary precision integer.
Bazzy (6281)
Are you including and linking the necessary files?
Topic archived. No new replies allowed.