0
Q:

What is the output of this program?

#include
        using namespace std;
        void fun(int x, int y)
        {
            x = 20;
            y = 10;
        }
        int main()
        {
            int x = 10;
            fun(x, x);
            cout << x;
            return 0;
        }

A) 10 B) 20
C) compile time error D) none of these

Answer:   A) 10



Explanation:

In this program, we called by value so the value will not be changed, So the output is 10

Subject: C++
Q:

Pick out the correct method in the c++ standard library algorithm.

A) mismatch B) maximum
C) minimum D) None of these
 
Answer & Explanation Answer: A) mismatch

Explanation:

It is a method in the search opertion in standard library algorithms.

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2 3971
Q:

What is mandatory for designing a new container?

A) Classes B) Iterators
C) Container D) None of these
 
Answer & Explanation Answer: B) Iterators

Explanation:
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0 4574
Q:

How many items are presented in the associate container?

A) 2 B) 3
C) 4 D) 5
 
Answer & Explanation Answer: D) 5

Explanation:

There are 5 items presented in the associate container. They are set, multiset, map, multimap and bitset.

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1 3123
Q:

What does the sequence adaptor provide?

A) Insertion B) Deletion
C) Interface to sequence container D) None of thse
 
Answer & Explanation Answer: C) Interface to sequence container

Explanation:
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1 3000
Q:

What do vectors represent?

A) Static arrays B) Dynamic arrays
C) Stack D) Queue
 
Answer & Explanation Answer: B) Dynamic arrays

Explanation:

Vectors are sequence containers representing arrays that can change in size.

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0 5203
Q:

How the member functions in the container can be accessed?

A) Iterator B) Indirect
C) Both a & b D) None of these
 
Answer & Explanation Answer: A) Iterator

Explanation:

The container manages the storage space for its elements and provides member functions to access them, either directly or through iterators which reference objects with similar properties to pointers.

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1 4252
Q:

Which is best for coding the standard libary for c++?

A) no trailing underscores on names B) complex objects are returned by value
C) have a member-swap() D) All of the mentioned
 
Answer & Explanation Answer: D) All of the mentioned

Explanation:
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1 2683
Q:

To which type of class, We can apply RTTI?

A) Encapsulation B) Polymorphic
C) Derived D) None of these
 
Answer & Explanation Answer: B) Polymorphic

Explanation:

RTTI is available only for classes which are polymorphic, which means they have at least one virtual method.

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