23 Jan C++ Destructors
A Destructor in C++ destructs an object. It has the same name as the class name and gets automatically called when an object gets created like Constructors.
Syntax – Destructors
Let us see the syntax of Destructors with our class name Studyopedia. It is prefixed by a tilde sign as shown below:
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Studyopedia() { // Constructor // Code comes here } ~Studyopedia() { // Destructor // Code comes here } |
As shown above, the Destructor syntax is like the Constructor, except for the prefixed tilde sign. Remember, the following points about Destructors:
- Define Destructor only once in a class
- The access specifier concept does not work on Destructors in C++
- The Destructors cannot have parameters, unlike Constructors.
Example – Destructors
Let us now see an example of Destructors in C++:
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#include <iostream> using namespace std; class Rectangle { public: // Access specifier // Constructor name is the same as the class name Rectangle() { cout << "Constructor gets invoked automatically!!"; cout << "\nA rectangle has 4 sides, 4 corners, and 4 right angles"; } // Destructor name is the same as the class name with a prefixed tilde sign ~Rectangle() { cout << "\n\nDestructor gets invoked automatically!!"; } }; int main() { /* Constructor and Destructor gets called automatically when we create an object of a class */ Rectangle rct; return 0; } |
Output
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Constructor gets invoked automatically!! A rectangle has 4 sides, 4 corners, and 4 right angles Destructor gets invoked automatically!! |
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