C++ BigInt implementation
git clone https://github.com/tmargary/BigIntcd BigIntcmake -B build -S . -DCMAKE_TOOLCHAIN_FILE=[path to vcpkg]/scripts/buildsystems/vcpkg.cmakecmake --build ./build./build/tests/BigIntTest
BigInt a("123456789");
BigInt b("-987654321");
result = (a * b).toString(); // "-121932631112635269"