Question

I have a function which takes a string as an argument.
What I want to do is check if the string starts with an upper case letter. If this is true, then I want to return true. If it does not start with an upper case letter then I wish to return false. Simple enough?

The code I was using is this:

bool filter(string word)
    {
        char cWord[50];
        char c;
        for(int i = 0; i <= word.size(); i++)
        {
            cWord[i] = word[i];
        }
        c = cWord[0];
        if(isupper(c)){return true;}
        else{return false;}
    }

However I don’t think it functions how I would like it to. Can anyone confirm that my function should work correctly, or whether there is a better way to check if the first character is a capital letter?

Answer 1

This should be as simple as this:

bool firstUpper(const string& word) { return word.size() && std::isupper(word[0]); }