You are looking for information on the topic “c++ vector of base class”. dongtienvietnam.com will gather information to answer your questions in this article. Please read this article to the end to find the information you want to see. You can also check out some other related articles here: https://dongtienvietnam.com/category/wiki/ vector of derived classes – c++, c++ vector of base class pointers, vector of unique pointers, c++ vector of child classes, c++ cast vector of derived*> to vector of base, unique_ptr, make_unique template In C++, you can create a vector of base class pointers. Here’s an example: In this example, we define a base class We then iterate over the vector and call the Finally, we delete each object and clear the vector to avoid memory leaks. [Khóa học lập trình C++ Cơ bản] – Bài 52: Cơ bản về lớp Vector | HowKteam Found 33 c++ vector of base class related images. In C++, a vector can store objects of a derived class, just like it can store objects of a base class or any other data type. Here is an example of how to create a vector of objects of a derived class: In this example, we have a base class called It’s important to note that when you add objects to a vector like this, you’re actually adding pointers to those objects. So when you’re done with the vector, you need to delete the objects pointed to by those pointers, as shown in the example above. In C++, a vector of base class pointers can be created using the following syntax: This creates an empty vector of pointers to the BaseClass. To add objects to the vector, you can use the Note that To access the objects in the vector, you can use a loop: This will call the It’s important to remember that when using pointers to objects, you must manually manage memory, including deleting objects that you have allocated with This will delete each object in the vector, including those that were created with You can see some more information related to c++ vector of base class here There are a total of 477 comments on this question. So you have finished reading the article on the topic c++ vector of base class. If you found this article useful, please share it with others. Thank you very much.View information about the c++ vector of base class
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c++ vector of base class
#include <vector>
#include <iostream>
class Animal {
public:
virtual void speak() {
std::cout << "I am an animal." << std::endl;
}
};
class Cat : public Animal {
public:
void speak() override {
std::cout << "Meow!" << std::endl;
}
};
class Dog : public Animal {
public:
void speak() override {
std::cout << "Woof!" << std::endl;
}
};
int main() {
std::vector<Animal*> animals;
animals.push_back(new Cat());
animals.push_back(new Dog());
for (Animal* animal : animals) {
animal->speak();
}
for (Animal* animal : animals) {
delete animal;
}
animals.clear();
return 0;
}
Animal
, and two derived classes Cat
and Dog
. We then create a vector animals
of pointers to Animal
objects. We add a Cat
and a Dog
object to the vector using push_back()
.speak()
function on each object. Since speak()
is a virtual function, the correct version of the function is called based on the type of the object.Watch videos related to “c++ vector of base class”
Images related to c++ vector of base class
vector of derived classes – c++
#include <iostream>
#include <vector>
using namespace std;
class Animal {
public:
virtual void speak() {
cout << "I am an animal." << endl;
}
};
class Dog : public Animal {
public:
void speak() {
cout << "I am a dog." << endl;
}
};
class Cat : public Animal {
public:
void speak() {
cout << "I am a cat." << endl;
}
};
int main() {
vector<Animal*> animals;
animals.push_back(new Dog());
animals.push_back(new Cat());
for (int i = 0; i < animals.size(); i++) {
animals[i]->speak();
}
for (int i = 0; i < animals.size(); i++) {
delete animals[i];
}
return 0;
}
Animal
and two derived classes called Dog
and Cat
. We create a vector of Animal
pointers, and we add two objects to it: a Dog
and a Cat
. We then iterate over the vector and call the speak()
method for each object. Since speak()
is a virtual method in the Animal
class, it will be called polymorphically for each derived class.c++ vector of base class pointers
std::vector<BaseClass*> myVector;
push_back
method:BaseClass* obj1 = new DerivedClass1();
BaseClass* obj2 = new DerivedClass2();
myVector.push_back(obj1);
myVector.push_back(obj2);
DerivedClass1
and DerivedClass2
are classes that inherit from BaseClass
.for (int i = 0; i < myVector.size(); i++) {
myVector[i]->method();
}
method()
function for each object in the vector.new
. You can do this using the delete
keyword:for (int i = 0; i < myVector.size(); i++) {
delete myVector[i];
}
new
.
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