C++ converting binary(64 bits) to decimal -


i using string contain 64 bits binary.

string abinary; abinary = "100011111011101100000101101110000100111000011100100100110101100";

initially tried this..

stringstream ss; ss << bitset<64>(abinary).to_ulong(); buffer = ss.str();  cout << buffer << endl;

its work binary, 1 doesn't work. how can convert above 64 bits binary contain in string container decimal of string container too.

it's overflowing, because to_ulong() 32-bits.

c++-11 introduces function to_ullong(), want. if don't have that, can try splitting string two, 2 32-bit numbers, convert 64-bit, shift , add.


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