sumanjit

• Sep 15th, 2005

 

If the operation modifies the state of the class object, it operates on, it must be a member function, not a friend fucntionThus all operator such as =, *=, +=, etc are naturally defined asmember functions not friend functionsConversely, if the operator does not modify any of its operands,but needs only a representation of the object, it does not have tobe a member function and often less confusing.This is the reason why binary operators are often implemented asfriend functions sunch as + , *, -, etc..

sachin_mundhra

 Profile Answers by sachin_mundhra 

• Dec 18th, 2009

 

Because assignment operator is one of the default method provided by the class.