HSC Science Class 11 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Exchange the contents: Given two glasses marked A and B. Glass A is full of apple drink and glass B is full of grape drink. Write the specification for exchanging the contents of glasses A and B, and write a sequence of assignments to satisfy the specification.

Decanting problem. You are given three bottles of capacities 5,8 and 3 litres. The 8L bottle is filled with oil, while the other two are empty. Divide the oil in an 8L bottle into two equal quantities. Represent the state of the process by appropriate variables. What are the initial and final states of the process? Model the decanting of oil from one bottle to another by assignment. Write a sequence of assignments to achieve the final state.

Suppose u, v = 10 ,5 before the assignment. What are the values of u and v after the sequence of assignments?

1 u := v

2 v := u

Which of the following properties is true after the assignment (at line 3)?

1 --i, j = 0, 0

2 i, j := i+1, j-1

3 --?

If C1 is false and C2 is true, the compound statement

1 if C1

2 S1

3 else

4 if C2

5 S2

6 else

7 S3

executes

How many times the loop is iterated?

i := 0

while i ≠ 5

i := i + 1

A loop invariant need not be true ______

Define a loop invariant.

Does testing the loop condition affect the loop invariant? Why?

What is the relationship between loop invariant, loop condition, and the input-output recursively?

What is the use of a header file?

What is the alternate name of the null statement?

In C++, the group of statements should be enclosed within: ______

Identify the odd one from the keywords of jump statements?

What are a null statement and compound statement?

Correct the following code sigment:

if (x = 1)
   p = 100; 
else
   p = 10;

Compare an if and a ? : operator.

Write a program to find the LCM and GCD of two numbers.

Write a program to find sum of the series

S = 1 + x + x² +..... + xⁿ

The paradigm which aims more at procedures.