Convert first letter in string to uppercase

Question

I have a string: \"apple\". How can I convert only the first character to uppercase and get a new string in the form of \"Apple\"?

I can al

Answer 1

(Only works with 'ASCII' characters.)

std::wstring s = L"apple";

if(islower(s.at(0) <= 'z' ? s.at(0) : 'A'))
    s[0] += 'A' - 'a';

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Or if you are feeling fancy and feel like torturing any future readers of your code:

std::wstringstream wss;
wss << std::uppercase   << s[0]
    << std::nouppercase << s.substr(1);
wss >> s;