Strings of unsigned chars

Question

Here\'s an interesting one. I\'m writing an AES encryption algorithm, and have managed to get it making accurate encryptions. The trouble comes when I attempt to write the r

Answer 1

std::string is nothing more or less than a specialization of the std::basic_string<> template, so you can simply do a

typedef std::basic_string ustring;

to get what you want.

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Note that the C/C++ standards do not define whether char is the signed or the unsigned variety, so any program that casts a char directly to a larger type invokes implementation defined behaviour.