I am trying to representing a 128-bit number in Visual C++, which direct me to the library BigInt class.
Many people mentioned it, so I think its a well known library.
When I try to run its main example, I got a long error list. Seem like something missing.
Error 1 error LNK2019: unresolved external symbol "protected: virtual __thiscall BigInt::BaseBigInt::~BaseBigInt(void)" (??1BaseBigInt@BigInt@@MAE@XZ) referenced in function "public: virtual __thiscall BigInt::Rossi::~Rossi(void)" (??1Rossi@BigInt@@UAE@XZ) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 2 error LNK2019: unresolved external symbol "class std::basic_ostream<char,struct std::char_traits<char> > & __cdecl operator<<(class std::basic_ostream<char,struct std::char_traits<char> > &,class BigInt::Rossi const &)" (??6@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@AAV01@ABVRossi@BigInt@@@Z) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 3 error LNK2019: unresolved external symbol "public: __thiscall BigInt::Rossi::Rossi(void)" (??0Rossi@BigInt@@QAE@XZ) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 4 error LNK2019: unresolved external symbol "public: __thiscall BigInt::Rossi::Rossi(unsigned __int64)" (??0Rossi@BigInt@@QAE@_K@Z) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 5 error LNK2019: unresolved external symbol "public: __thiscall BigInt::Rossi::Rossi(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,unsigned int)" (??0Rossi@BigInt@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@I@Z) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 6 error LNK2019: unresolved external symbol "public: long double __thiscall BigInt::Rossi::toDouble(void)const " (?toDouble@Rossi@BigInt@@QBEOXZ) referenced in function "void __cdecl simpleDemoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &)" (?simpleDemoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 7 error LNK2019: unresolved external symbol "public: static class BigInt::Rossi __cdecl BigInt::Rossi::fromDouble(long double const &)" (?fromDouble@Rossi@BigInt@@SA?AV12@ABO@Z) referenced in function "void __cdecl simpleDemoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &)" (?simpleDemoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 8 error LNK2019: unresolved external symbol "public: class BigInt::Rossi __thiscall BigInt::Rossi::operator+(class BigInt::Rossi const &)" (??HRossi@BigInt@@QAE?AV01@ABV01@@Z) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 9 error LNK2019: unresolved external symbol "public: class BigInt::Rossi __thiscall BigInt::Rossi::operator*(class BigInt::Rossi)const " (??DRossi@BigInt@@QBE?AV01@V01@@Z) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 10 error LNK2019: unresolved external symbol "public: class BigInt::Rossi __thiscall BigInt::Rossi::operator/(class BigInt::Rossi const &)const " (??KRossi@BigInt@@QBE?AV01@ABV01@@Z) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 11 error LNK2019: unresolved external symbol "public: class BigInt::Rossi __thiscall BigInt::Rossi::sqrt(void)" (?sqrt@Rossi@BigInt@@QAE?AV12@XZ) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 12 error LNK2019: unresolved external symbol "public: static class BigInt::Rossi __cdecl BigInt::Rossi::pow(class BigInt::Rossi const &,class BigInt::Rossi const &,bool)" (?pow@Rossi@BigInt@@SA?AV12@ABV12@0_N@Z) referenced in function "void __cdecl simpleDemoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &)" (?simpleDemoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 13 error LNK2019: unresolved external symbol "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall BigInt::Rossi::toStr0xHex(void)const " (?toStr0xHex@Rossi@BigInt@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@XZ) referenced in function "void __cdecl simpleDemoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &)" (?simpleDemoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 14 error LNK2019: unresolved external symbol "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall BigInt::Rossi::toStrDec(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)const " (?toStrDec@Rossi@BigInt@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV34@@Z) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 15 error LNK2019: unresolved external symbol "public: virtual unsigned int __thiscall BigInt::Rossi::getActualHexDigits(void)const " (?getActualHexDigits@Rossi@BigInt@@UBEIXZ) referenced in function "void __cdecl simpleDemoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &)" (?simpleDemoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 16 error LNK2019: unresolved external symbol "public: virtual unsigned int __thiscall BigInt::Rossi::getActualDecDigits(void)const " (?getActualDecDigits@Rossi@BigInt@@UBEIXZ) referenced in function "void __cdecl simpleDemoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &)" (?simpleDemoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 17 error LNK2019: unresolved external symbol "public: static int __cdecl BigInt::Run::mainBigInt(int,char * *)" (?mainBigInt@Run@BigInt@@SAHHPAPAD@Z) referenced in function _main c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 18 error LNK2019: unresolved external symbol "public: static void __cdecl BigInt::Run::showTime(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?showTime@Run@BigInt@@SAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@4@@Z) referenced in function _main c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 19 error LNK2019: unresolved external symbol "public: static void __cdecl BigInt::Run::showCommandLine(class std::basic_ostream<char,struct std::char_traits<char> > &,int,char * *)" (?showCommandLine@Run@BigInt@@SAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@HPAPAD@Z) referenced in function "void __cdecl showIllegalCommandLineBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,int,char * *)" (?showIllegalCommandLineBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@HPAPAD@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 20 error LNK2019: unresolved external symbol "public: static void __cdecl BigInt::Run::showHelp(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?showHelp@Run@BigInt@@SAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@4@@Z) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 21 error LNK2019: unresolved external symbol "public: static void __cdecl BigInt::Test::setTestName(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,unsigned int,unsigned int,unsigned int)" (?setTestName@Test@BigInt@@SAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@4@1III@Z) referenced in function "void __cdecl demoBigInt(class std::basic_ostream<char,struct std::char_traits<char> > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?demoBigInt@@YAXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 22 error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const BigInt::s_strHelp" (?s_strHelp@BigInt@@2V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@B) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 23 error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const BigInt::s_strDemo" (?s_strDemo@BigInt@@2V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@B) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 24 error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const BigInt::s_strTest" (?s_strTest@BigInt@@2V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@B) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 25 error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const BigInt::s_strTime" (?s_strTime@BigInt@@2V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@B) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Error 26 error LNK2001: unresolved external symbol "public: static unsigned int BigInt::Test::s_returnValue" (?s_returnValue@Test@BigInt@@2IA) c:\Users\HyNguyen\documents\visual studio 2013\Projects\TestBinInt\TestBinInt\Source.obj TestBinInt
Copyright Notice：Content Author:「Andiana」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/40901073/cannot-make-bigint-class-working-in-visual-c