CBSE Class 12 Computer Science 2 Marks HOTs

CBSE Class 12 Computer Science HOTs Questions Database. Based on CBSE and NCERT guidelines. The students should practice these HOTs Questions to gain perfection which will help him to get more marks in CBSE examination. Based on CBSE and NCERT guidelines. Based on the same pattern as released by CBSE every year. CBSE releases HOTs Questions every year. These papers are released prior to the CBSE board examinations so that students can do practice. databse of 1 marks, 2 marks, 3 marks and 5 marks questions.

 2 Marks Questions

Programming in C++

1. What is wrong with the following while loop:

a. int counter = 1; b. int counter = 1;

while ( counter < 100) while ( counter < 100)

{ cout << counter << “\n;

cout << counter << “\n; counter + +;

counter - -;

}

2. What will be the output of following:

void main ( )

{

int val = 10;

cout << val

3. Given the following code fragment:

int ch = 20;

cout << ch << ++ ch << ch << “\n”;

(i) The output of the code fragment.

(ii) What is the effect of replacing ++ ch with ch + 1?

4. Differentiate between the output of following code fragments:

(i) int f = 1, i = 2; (ii) int f = 1, i = 2;

while (++ i < 5) do {

f *= i; f *= i;

cout << f; } while (++ i < 5);

cout << f;

5. Give output:

#include<iostream.h>

int global = 20;

void fun (int &x, int y)

{

x = x – y; y = x * 10;

cout << x << ‘, ’ << y << ‘\n’;

}

void main()

{

int global = 8;

fun (:: global, global);

cout << global << ‘, ’ << :: global << ‘\n’;

fun (global, :: global);

cout << global << ‘, ’ << :: global << ‘\n’;

}

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