Checking if a variable is initialized

Question

Seems like this would be a duplicate, but maybe it is just so obvious it hasn\'t been asked...

Is this the proper way of checking if a variable (not pointer) is init

Answer 1

If for instance you use strings instead of chars, you might be able do something like this:

    //a is a string of length 1
    string a;
    //b is the char in which we'll put the char stored in a
    char b;
    bool isInitialized(){
      if(a.length() != NULL){
        b = a[0];
        return true;
      }else return false;
    }