Explain all the C++ concepts using examples.
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Answer / Neeraj Chaudhary
1. Variables and Data Types: int x = 5; // integer variable
2. Functions: void printHello() { cout << "Hello, World!" << endl; }
3. Operators: int y = 7 + 3;
4. Control Structures: if (x > y) cout << x << " is greater than " << y << endl;
5. Arrays: int arr[5] = {1, 2, 3, 4, 5};
6. Loops: for (int i = 0; i < 5; ++i) {n cout << arr[i] << " ";n}
7. Pointers: int *ptr = &x;
8. Classes and Objects: class MyClass {npublic:n int value;n}; MyClass obj, obj2;
9. Inheritance: class Derived : public Base {npublic:n void myMethod() {n cout << "Derived method called" << endl; n }n};n10. Polymorphism: class Animal {npublic:n virtual void speak() = 0;n}; class Dog : public Animal {npublic:n void speak() { cout << "Woof!" << endl; }n}
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