Introduction to C++ Operator Overloading

CS202 6- ‹#›

Overloading <<, >> Operators

nWe know from examining how these operators behave on built-in types that extraction will modify the second operand but the insertion operator will not.

nTherefore, the extraction operation should declare the second operand to be a reference.

nThe insertion operator should specify the second operator to be a constant reference.

nThe return value should be a reference to the object (istream or ostream) that invoked the operator for chaining.

cin >> str >>i;

cout << str <<i;