What is meant by multiple inheritance?

1.	What is meant by multiple inheritance?
A.	Deriving a derived class from base class
B.	Deriving a derived class from more than one base class
C.	Deriving a base class from derived class
D.	All of above
E.	None of these
Answer» C. Deriving a base class from derived class

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What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class BaseClass { public: virtual void print() const = 0; }; class DerivedClassOne : public BaseClass { public: void print() const { cout << "Derived class One n"; } }; class DerivedClassTwo : public BaseClass { public: void print() const { cout << "Derived class Two n"; } }; class MultipleClass : public DerivedClassOne, public DerivedClassTwo { public: void print() const { DerivedClassTwo :: print(); } }; int main() { int i; MultipleClass both; DerivedClassOne one; DerivedClassTwo two; BaseClass *array[ 3 ]; array[ 0 ] = &both; array[ 1 ] = &one; array[ 2 ] = &two; array[ i ] -> print(); return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; struct Student1 { int num; }; struct Student2 { int* val; }; struct Student3 : public Student1, public Student2 { }; int main() { Student3* ptr = new Student3; ptr->val = 0; cout << "Above structures are Inherited..."; return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class StudentClass { public: int RollNo , mark1 , mark2 ; void get() { RollNo = 25, mark1 = 15, mark2 = 40; } }; class sportsClass { public: int sortMarks; void getsm() { sortMarks = 20; } }; class statementClass:public StudentClass,public sportsClass { int Total,average; public: void display() { Total = (mark1 + mark2 + sortMarks); average = Total / 3; cout << Total << " "; cout << average; } }; int main() { statementClass object; object.get(); object.getsm(); object.display(); } </iostream></pre>
What is meant by multiple inheritance?
What are the things are inherited from the base class?
Which design patterns benefit from the multiple inheritances?

What is meant by multiple inheritance?

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