Program 5 Identify the type of inheritance stated. Write C++ program to implement the scenario given using the identified inheritance. Address the ambiguity in this scenario. Class Base Data members: team_name, N -total_match, int score[N] - an array to store scores for N matches. Member function: void readscore() -to read the scores. Constructor- to initialize the data members Class Derived 1 void display (int score[size])- to print N scores. Class Derived 2 Data member : sum void display (int score[size])- to find the sum N scores. Class C-Derived 3 Member function:void average() -to find average of N scores. Create an object for class D and access the methods. Sample Input 4 90 45 78 89 Scores: 90 45 78 89 Sum:302.00 Average75.50
Question
Program 5
Identify the type of inheritance stated. Write C++ program to implement the scenario given
using the identified inheritance. Address the ambiguity in this scenario.
Class Base
Data members: team_name, N -total_match, int score[N] - an array to store scores for N
matches. Member function: void readscore() -to read the scores.
Constructor- to initialize the data members
Class Derived 1
void display (int score[size])- to print N scores.
Class Derived 2
Data member : sum
void display (int score[size])- to find the sum N scores.
Class C-Derived 3
Member function:void average() -to find average of N scores.
Create an object for class D and access the methods.
Sample Input
4
90
45
78
89
Scores: 90 45 78 89
Sum:302.00
Average75.50
Solution
The type of inheritance stated in the problem is Multiple Inheritance. In C++, Multiple Inheritance is a feature where a class can inherit from more than one classes. The derived class inherits all the features from the base class.
Here is a C++ program to implement the scenario:
#include<iostream>
using namespace std;
class Base {
protected:
string team_name;
int N;
int *score;
public:
Base(int n) {
N = n;
score = new int[N];
}
void readscore() {
cout << "Enter scores: ";
for(int i=0; i<N; i++) {
cin >> score[i];
}
}
};
class Derived1: public virtual Base {
public:
Derived1(int n):Base(n) {}
void display() {
cout << "Scores: ";
for(int i=0; i<N; i++) {
cout << score[i] << " ";
}
cout << endl;
}
};
class Derived2: public virtual Base {
protected:
int sum;
public:
Derived2(int n):Base(n) {
sum = 0;
}
void display() {
for(int i=0; i<N; i++) {
sum += score[i];
}
cout << "Sum: " << sum << endl;
}
};
class Derived3: public Derived1, public Derived2 {
public:
Derived3(int n):Base(n),Derived1(n),Derived2(n) {}
void average() {
cout << "Average: " << (float)sum/N << endl;
}
};
int main() {
int n;
cout << "Enter number of matches: ";
cin >> n;
Derived3 d(n);
d.readscore();
d.Derived1::display();
d.Derived2::display();
d.average();
return 0;
}
In this program, we have used virtual inheritance to resolve the ambiguity problem. Virtual inheritance is a process that allows you to specify the superclass from which the subclass will inherit. This can prevent multiple entities of a multiple-inherited superclass appearing in an object's layout.
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