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This article mainly introduces the example analysis of C++ operator overloading, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

1. Operator overloading

The C++ operator can only be used with basic data types

Expression form

Return value type operator operator (formal parameter table) {.} 1.1 operator is overloaded as a normal function

1.2 operators are overloaded as member functions

two。 Overloading of the assignment operator =

When the types on both sides of the assignment operator do not match, for example, the int type is assigned to the Complex type, in this case, the assignment operator = needs to be overloaded, and the assignment operator = can only be overloaded as a * * member function * *, not an ordinary function.

Pointing dynamic

2.1 shallow replication and deep replication

Shallow copy: copy byte by byte

Deep copy: copies what the pointer variable points to to what the pointer member object points to in another object

In order to achieve the above effect, you need to design a new operator=, implementation program as follows:

2.2 discussion of return values

3. Dynamic variable length array

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