can somebody explain what is "This" operator in C++ -

i know "this" operator used access member functions of invoking object,but can called .so,what use of "this" operator.

i don't think such bad question. not asking does, why keyword exists when implied of time.

here case pointer necessary

class test {     int i;      void set(int i)     {         this->i = i;     } };

this used select between member variable , function parameter same name.

this used when need address of object within class.

void f(test *p);  class test {     int i;      void pass()     {         f(this);     } };

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