size of integer is 4,long long int is 8 byte and it can access about 19 digits data and for unsinged long long int size also 8 byte but handle larger value than long long int but this is less than 20 digits.Is there any way that can hangle over 20 digits data.
#include<iostream>
using namespace std;
int main()
{
    unsigned long long int a;
    cin>>a;
    if(a>789456123789456123123)//want to take a higher thand this digits
    {
        cout<<"a is larger and big data"<<endl;
    }
}
I searched about it for a while but didn't find helpful contents.all about is java biginteger..