CODEWITHSUNDEEP
c++int
Mike Kane
Mike Kane

Reputation: 13

integer type larger than unsigned long long, as well as library?

I am writing a program and I need to use the mass of the Earth (5.972E24 kg) I cannot find a valid int type that fits this much data. I also need the library, so I can include it.

Upvotes: 0

Views: 951

Answers (2)

Julian
Julian

Reputation: 1736

A double will easily hold that value:

#include <iostream>

int main()
{
    double earthMass = 5.972E24;
    std::cout << earthMass << std::endl; // Prints 5.972e+24

    // And then some
    double twoHundredEarthMass = 200 * earthMass;
    std::cout << twoHundredEarthMass << std::endl; // Prints 1.1944e+27
}

Floating point numbers are not stored in memory in the same fashion as integral types.

Upvotes: 4

Ayman Khamouma
Ayman Khamouma

Reputation: 1006

you should check for __int128 (gcc extention, not part of the c++ standrad) or you ca look for Arbitrary-precision arithmetic such as GMP (basically you can use numbers as big as you want, the only limit is the available memory)

Upvotes: 0

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