how to test a string for letters only

Question

how could I test a string against only valid characters like letters a-z?...

string name;

cout << \"Enter your name\"
cin >> name;

string lette         


        

Answer 1

C++11 approach using std::all_of:

std::all_of(std::begin(name), std::end(name),
    [](char c){ return std::isalpha(c); });

std::all_of will only return true if all of the elements are true according to the supplied predicate function.