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#include using namespace std; class A { private: int m; public: A(int m1 = 1) { m = ml; int f() { return m; }; // Your class B implementation goes below. Note that B should be a derived class from A. // The constructor for B takes two parameters: the first to initialize m and the second to initialize a private variable int n in B. // We will also override A::f() in class B. The return value for B::f() is computed using a call to A's version of f() plus the value of n. // For example if m is 11 and n is 5 then the return value for B::f() would be 16. // Your main should be exactly the same as the one below. Just copy paste with no changes. int main() { int m, n; cin >> m >> n; A a(m); B b(m,n); A *p = &a; A * q = &b; cout <« p->f() « ▪ ▪ << g->f() « endl; return e;

#include using namespace std; class A { private: int m; public: A(int m1 = 1) { m = ml; int f() { return m; }; // Your class B implementation goes below. Note that B should be a derived class from A. // The constructor for B takes two parameters: the first to initialize m and the second to initialize a private variable int n in B. // We will also override A::f() in class B. The return value for B::f() is computed using a call to A's version of f() plus the value of n. // For example if m is 11 and n is 5 then the return value for B::f() would be 16. // Your main should be exactly the same as the one below. Just copy paste with no changes. int main() { int m, n; cin >> m >> n; A a(m); B b(m,n); A *p = &a; A * q = &b; cout <« p->f() « ▪ ▪ << g->f() « endl; return e;

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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in c++

i need to implement a derived class im not sure what im doing wrong in the first image is what i have so far in

```cpp #include <iostream> using namespace std; class A { private: int m; public: A(int m1 = 1) { m = m1; } int f() { return m; } }; // Your class B implementation goes below. Note that B should be a derived class from A. // The constructor for B takes two parameters: the first to initialize m and the second to initialize a private variable int n in B. // We will also override A::f() in class B. The return value for B::f() is computed using a call to A's version of f() plus the value of n. // For example if m is 11 and n is 5 then the return value for B::f() would be 16. // Your main should be exactly the same as the one below. Just copy paste with no changes. int main() { int m, n; cin >> m >> n; A a(m); B b(m, n); A *p = &a; A *q = &b; cout << p->f() << " " << q->f() << endl; return 0; } ``` This code involves a class `A` with a private integer `m` and public functions to initialize it and return it. The comments guide you to implement a derived class `B` from `A` that takes an additional parameter `n` and overrides the function `f()` to add `n` to the result of `A::f()`. The `main` function reads input values for `m` and `n`, creates objects of `A` and `B`, and prints the results of their `f()` functions.
Transcribed Image Text:```cpp #include <iostream> using namespace std; class A { private: int m; public: A(int m1 = 1) { m = m1; } int f() { return m; } }; // Your class B implementation goes below. Note that B should be a derived class from A. // The constructor for B takes two parameters: the first to initialize m and the second to initialize a private variable int n in B. // We will also override A::f() in class B. The return value for B::f() is computed using a call to A's version of f() plus the value of n. // For example if m is 11 and n is 5 then the return value for B::f() would be 16. // Your main should be exactly the same as the one below. Just copy paste with no changes. int main() { int m, n; cin >> m >> n; A a(m); B b(m, n); A *p = &a; A *q = &b; cout << p->f() << " " << q->f() << endl; return 0; } ``` This code involves a class `A` with a private integer `m` and public functions to initialize it and return it. The comments guide you to implement a derived class `B` from `A` that takes an additional parameter `n` and overrides the function `f()` to add `n` to the result of `A::f()`. The `main` function reads input values for `m` and `n`, creates objects of `A` and `B`, and prints the results of their `f()` functions.
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