WeCP C & C++ Quiz 1

Question 1

Time: 00:00:00
If inside of the main function someone write:

int c=12;

printf("%d %d %d",c++,++c,c++);

What will be the output for this?

12 14 15

12 14 15

14 15 12

14 15 12

13 13 15

13 13 15

13 13 14

13 13 14

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Question 2

Time: 00:00:00
Suppose you have to delete an object, or deallocate its memory. The type of pointer about toto occur is

Null pointer

Null pointer

Integer Pointer

Integer Pointer

Pointer of its own data type

Pointer of its own data type

Dangling Pointer

Dangling Pointer

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Question 3

Time: 00:00:00
What does int a:8 means?

Integer a has the value 8.

Integer a has the value 8.

Integer a has 8 digits

Integer a has 8 digits

There is an integer divided by 8

There is an integer divided by 8

Integer a has 8 bits

Integer a has 8 bits

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Question 4

Time: 00:00:00


#include <stdio.h>

int main()

{

int *p;

int x=2;

p=&x;

printf("%d %d",*(p+1),*p+1);

}

What is the output  of the following code?

3 4

3 4

Garbage Garbage

Garbage Garbage

3 Garbage

3 Garbage

Garbage 3

Garbage 3

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Question 5

Time: 00:00:00
Suppose n is an integer. Which of the options is always unable to represent the total number of nodes in a saturated binary tree.

2n +1

2n +1

2^n + 1

2^n + 1

2^n - 1

2^n - 1

n+1

n+1

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Question 6

Time: 00:00:00
In case of Polymorphism, which of these cannot be overloaded?

Operators

Operators

Static member functions

Static member functions

Member functions

Member functions

Global functions

Global functions

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Question 7

Time: 00:00:00
What is a good way to make a 2d memorization matrix apart from the syntax:

map<int,map<int,int> > m; ?

vector<vector<int>> m;

vector<vector<int>> m;

map<<vector<int>,int> m;

map<<vector<int>,int> m;

map<pair<int,int>,int> m;

map<pair<int,int>,int> m;

list<list<int>> m;

list<list<int>> m;

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Question 8

Time: 00:00:00
int func(int i)

{

if(i==0||i==1) return i;

return i*func(i+1);

}

int main()

{

cout<<func(5);

}

Output of the following snippet is:

15

15

21

21

10

10

None of this

None of this

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Question 9

Time: 00:00:00
What will be the output for the following code if r is 7 :
int main()

{

    int i,r=7,j;

    for(i=0;i<r;i++){

        for(j=i;j<r;j++)

            if(i==1 || j==i || j==r)

            cout<<"*";

            else

            cout<<" ";

        cout<<endl;

    }

    return 0;

}

  *   * * * * *  * * * *  * * * * * * * * * * * * * * * * * *

  *   * * * * *  * * * *  * * * * * * * * * * * * * * * * * *

  * * * * * * *   *           * *         * *       * *     * *   * * * *

  * * * * * * *   *           * *         * *       * *     * *   * * * *

* ******* * * * * *

* ******* * * * * *

  *******   *    * *   * *  * * * **

  *******   *    * *   * *  * * * **

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Question 10

Time: 00:00:00
Which of the functions only decreases the capacity of a string?

resize()

resize()

capacity()

capacity()

shrink_to_fit()

shrink_to_fit()

rend()

rend()

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["0","40","60","80","100"]
["Need more practice!","Keep trying!","Not bad!","Good work!","Perfect!"]
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October 29, 2021