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11th Computer Science Monthly Test -2 ( Composition and Decomposition )

MABS Institution

11th Computer Science Monthly Test -2 ( Composition and Decomposition )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Which one of the following statement is used to alter the-normal flow of control of the program?

Assignments
Control flow
Compound
both b & c

Which of the following involves breaking down a problem into smaller and more manageable problems?

Specification
Abstraction
decomposition
composition

The inputs and outputs are drawn using _________ boxes.

rectangular
diamond
Parallelogram
Oval

Which one of the following notations will be executed by computers?

Flow chart
Pseudocode
Programming languages
Compiler

If C S is a ___________ variant of alternative statement

iterative
assignment
control flow
conditional

How many notations are there for representing algorithms?

1
2
3
many

Which of the following is an iterative statement?

If C
S
While C
S
--P
S1
--Q
both (a) and (b)

The translation will not happened by the error

logical
runtime
grammar
all of these

If C is false just before the loop, the control flows through
1 SI
2 while C
3 S2
4 S3

S1 ; S3
S 1 ; S2 ; S3
S 1 ; S2 ; S2 ; S3
S 1 ; S2 ; S2 ; S2 ; S3

Identify the correct statements
(i) Pseudo code uses natural English for statements and conditions.
(ii) Pseudo code notation is formal one.
(iii) There is no need to follow the rules of the Programming language grammer
(iv) It must be rigorous and correct.

(i) (ii) (iii)
(ii) (iii) (iv)
(i) (iii) (iv)
(i) (ii) (iii) (iv)

Part - B

Generic 2 - Answer All Question

Distinguish between a condition and a statement.

What is the difference between an algorithm and a program?

What are the 3 important control flow statements?

When a condition statement will be executed?

Draw a flowchart for conditional statement.

What is a Flow-chart?

Define a Function.

Part - C

Generic 3 - Answer All Question

How the sequential statement represented in a flowchart?

What is a function in defining algorithm?

Name the three control flow statement.

Draw various symbols used in flowchart with their usage.

Wite a note on alternative statement?

What are the disadvantage of using flowchart?

Define Decomposition in defining algorithm.

Part - D

Generic 5 - Answer All Question

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.

Explain the sequential statement in detail with the diagram.

Explain various symbols in Flow chart,

Explain case analysis in detail with an example.
Trace the step-by-step execution of the algorithm for factorial(4). factorial(n)
--inputs: n is an integer, n > 0
-- outputs: f = n!
f, i := 1 ,1 while i < n
f, i := f X i, i1+

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 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.

Explain Alternative statement.

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