EOS commander is an Android client for EOSIO blockchain for EOS dApp developer. It includes functions of wallet. Developers can test wallet, account, transaction, contract, etc. with simple input on the Android device. PLACTAL team hopes this makes more EOS mobile DApps activated.

github: https://github.com/plactal/EosCommander

#include "eoslib/print.hpp"  
#include "BigIntegerLibrary.hpp"  

 BigInteger a = 65536;  
 print("a * a * a * a * a * a * a * a: ", ( a * a * a * a * a * a * a * a ) );

then, eosd prints 340282366920938463463374607431768211456.

github: https://github.com/plactal/biginteger-for-eosio