Is there a way to call an operator function from another member function?

Code:

---

I have class C{
...

C& operator<<(C& os, const char* str) {
...
}

void display() {
Is there anyway I can call operator<< in here?

}

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*this

If you don't actually need to directly access any private member variables, then make that member function into a non-member non-friend function.

thank you