CS304 Final Term Solved Subjective Set 2 by VUBuddy

CS304-Object Oriented programming NEW Solved Final terms papers with

references from 2012-2013 by

Q) Describe the way to declare a template function as a friend of any class?(2marks)

Answer: (Page 294)

Template<class U>

Void doSomething (U);

Template<class V>;

Class A{

int data;

Class B{

int data;

friend void doSomething(T);

friend A<T>; int.this function will take 2 parameters one will be pointer and other will be will be size of array (mrk3)

Answer: (Page 257)

Void printArray(T*array,int size)

For(int i=0;i<size;i++)

Cout<<array[i];

int main()

int iArray[5]={1,2,3,4,5};

void printArray(iArray,5);

return 0; Q) Consider the code below,

1. template<typename T> class Test { · 2. T value; · 3. public: · 1. Test( T val ) : value(val){} · 1. Test(const Test<T>& c) : value(c.value) {} · 1. }; · 1. int main() { · 2. Test< int > t1( 0 ), t2( 0 ); · 3. Test< float > t3 = t1; · 4. system("PAUSE"); · 5. return 0; · 6. }

Q) Give line number having any error/errors in this code explain the reason for error/s and give corrected code as well.

Answer: Test< float > t3 = t1; There is an error in this line due to conversion from int to float but in a wrong way

Q) Why Abstract class’s objects cannot be instantiated?

Answer: (Page 230) Abstract class’s objects cannot be instantiated they are used for inheriting interface or implementation so that derived classes can give implementation of these concepts.