Using huge numbers

I would like to make my program calculate this:

Code:

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cout <<(long double)pow((long double)2,2005)<<endl;

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but the answer is too big, but there must be a way to calculate this in my program...

You could consider using the GNU MP library.

tere :)
i wrote a program to deal with huge numbers a while ago. it's not hard to do this. to write a pow() just write a multiplication function and use it in a loop, it would be slow, yes, but it will get the job done.

Quote:

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it's not hard to do this.

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I agree, but it can be tedious if you're working on something else and just need bignum support. Not only that, but it isnt easy to make it run (relatively) fast.

Quote:

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Originally Posted by laserlight

I agree, but it can be tedious if you're working on something else and just need bignum support. Not only that, but it isnt easy to make it run (relatively) fast.

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yes, you are right, laserlight. if he's working on something else, then it really isn't necessary, but if it's just a hobby project why not...

Displays 0:

Code:

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#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
    int slow=2;
    for(int road=1;road<2005;road++){
    slow=slow*2;
    }
    cout<<slow<<endl;
    system("PAUSE");
    return EXIT_SUCCESS;
}

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