destructor in c 2b 2b

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showing results for - "destructor in c 2b 2b"
Ana
12 Jan 2018
1#include <iostream>
2class Entity {
3	
4public:
5	float x, y;
6	Entity() {
7		x = 0.0f;
8		y = 0.0f;
9      // the above is not a good practice ,instead you can use constructor member initializer list to initialize variables
10		std::cout << "Created Entity" << std::endl;
11		std::cout << "x " << x << " y " << y << std::endl;
12		//This is a constructor and it gets called everytime we instantiate an object
13		
14	}
15	~Entity() {
16		//This is a destructor object it gets called every time object is destroyed or its scope ends
17		//Note1:that this function can never return anything 
18		//Note2:Followed by this ~ symbol the name of the function must be equal to class name
19		std::cout << "[Destroyed Entity]" << std::endl;
20	}
21};
22
23int main(){
24	{
25		Entity e1;
26      //here constructor is called and output => Created Entity 
27      //here constructor is called and output => 0,0
28	}
29  //here Destructor is called and output => Destroyed Entity
30  // Destructor will get called here when compiler will get out of the end bracket and the lifetime of object ends
31	 // have a graeater look in debug mode
32	std::cin.get();
33}
Gaétan
09 Jul 2016
1#include <iostream>
2using namespace std;
3class HelloWorld{
4public:
5  //Constructor
6  HelloWorld(){
7    cout<<"Constructor is called"<<endl;
8  }
9  //Destructor
10  ~HelloWorld(){
11    cout<<"Destructor is called"<<endl;
12   }
13   //Member function
14   void display(){
15     cout<<"Hello World!"<<endl;
16   }
17};
18int main(){
19   //Object created
20   HelloWorld obj;
21   //Member function called
22   obj.display();
23   return 0;
24}
Sofia
24 Oct 2017
1class A
2{
3    // constructor
4    A()
5    {
6        cout << "Constructor called";
7    }
8
9    // destructor
10    ~A()
11    {
12        cout << "Destructor called";
13    }
14};
15
16int main()
17{
18    A obj1;   // Constructor Called
19    int x = 1
20    if(x)
21    {
22        A obj2;  // Constructor Called
23    }   // Destructor Called for obj2
24} //  Destructor called for obj1
25
Julissa
10 Jun 2016
1class Line {
2   public:
3      Line();   // This is the constructor declaration
4      ~Line();  // This is the destructor: declaration
5};
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