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Composition and Decomposition | Computer Science - Choose the correct answer | 11th Computer Science : Chapter 7 : Composition and Decomposition

Chapter: 11th Computer Science : Chapter 7 : Composition and Decomposition

Choose the correct answer

Multiple choice questions with answers / choose the correct answer with answers - Computer Science Book back 1 mark questions and answers

Algorithmic Problem Solving

Composition and Decomposition

Evaluation

Part I

 

1. 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

(a) u, v = 5 ,5

(c) u, v = 10 ,5

(b) u, v = 5 ,10

(d) u, v = 10 ,10

 

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

1 -- i+j = 0

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

3  -- ?

(a) i+j >0

(b) i+j < 0

(c) i+j =0

(d) i = j

 

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

(a) S1

(b) S2

(c) S3

(d) none

 

4. If C is false just before the loop, the control flows through

 1 S1

 2 while C

 3      S2

 4 S3

(a) S1 ; S3

(b) S1 ; S2 ; S3

(c) S1 ; S2 ; S2 ; S3

(d) S1 ; S2 ; S2 ; S2 ; S3

 

5. If C is true, S1 is executed in both the flowcharts, but S2 is executed in


(a) (1) only

(b) (2) only

(c) both (1) and (2)

(d) neither (1) nor (2)

 

6. How many times the loop is iterated?

 i := 0

  while i ≠ 5

    i := i + 1

(a) 4

(b) 5

(c) 6

(d) 0

 

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