Convert String to BigInteger in C++

Question

I'm using the BigInteger library. However when converting from string to BigInteger I summon the error "no matching function for call BigInteger(string&)".

How should one convert from between the two without invoking an error?

Here is a snippit of my code:

      #include "BigIntegerLibrary.hh"

      str1=randomStrGen(1);
      str2=randomStrGen(1);

      BigInteger s1 = new BigInteger(str1);
      BigInteger s2 = new BigInteger(str2);

BigInteger Library downloaded from https://mattmccutchen.net/bigint/, 2010.04.30 Release

Which BigInteger library are you using? Link to download site? Where is you include statement? — Doug Coburn, Aug 10 '17 at 05:32
@CinCout I guess there are multiple BigInteger Libraries for this, I'll have a look for another. — Dave, Aug 10 '17 at 05:38

CinCout · Accepted Answer · 2017-08-10T05:44:01.560

4

This is how you can convert a std::string to BigInteger:

std::string s("3141592653589793238462643383279");
BigInteger f = stringToBigInteger(s);

Note that the method stringToBigInteger() is declared in BigIntegerUtils.hh.

This and many other sample usages of the library can be found here.

edited Aug 10 '17 at 05:44

answered Aug 10 '17 at 05:39

CinCout

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I deleted my duplicate answer... you beat me to it. – Doug Coburn Aug 10 '17 at 05:46

Convert String to BigInteger in C++

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