Question

For loop should iterate through std::vector and populate content.

First for loop gives me an error message saying:

NO BINARY OPERATOR FOUND << No convert possible

vector<MyClass>classVector;
    for (vector<MyClass>::iterator i = classVector.begin();
                           i != classVector.end();
                           ++i)
            {
                cout << *i << endl;
            }

MyClass.h:

class MyClass{

private:

    string newTodayTaskString;

public:
    MyClass(string t) : newTodayTaskString (t){}

    ~MyClass(){}
};

This for loop iterates through a vector of strings and works perfectly. Why?

vector<string>stringVector;
   for (vector<string>::iterator i = stringVector.begin(); 
                         i != stringVector.end(); 
                         ++i) 
            {
                cout<<*i<<endl;
            }

Answer 1

You need to overload the stream operator for your class if you want to be able to directly call std::cout::operator <<.

You can either define it as:

 std::ostream& operator << (std::ostream& stream, const MyClass& obj)
 {
    stream << obj.newTodayTaskString;
 }

and declare this operator as friend so it has access to the private members of the class or provide a print function to your class and use that instead.