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How can I change a hex character, not string, into a numerical value? While typing this question, I found many answers on how to convert hex strings to values. However, none work for chars. I remember reading somewhere that this works for strings: std::string mystr = "12345"; unsigned int myval; std::stringstream(mystr) >> std::hex >> myval; However, if I do mystr[x] in a loop, this code will not work. I have tried adding a new line with std::string temp = mystr[x] and changing std::stringstream(mystr) to std::stringstream(temp) , but that's not working either. So how should I do this? Currently, I'm searching through a string of the hex chars ( "0123456789abcdef".find(mystr[x]); ) and using the index for the value. However, since it searches, it's slow, even if it's only searching through 16 characters. http://ideone.com/dIyD4
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