Computer Decision Constructs Test Online

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Question 1

1. What happens if a break is omitted in a switch case?

Answer

Syntax error

Answer

Program terminates

Answer

Only default executes

Answer

Fall-through occurs

Question 2

2. Which of the following is used to evaluate multiple conditions?

Answer

if-else ladder

Question 3

3. Which of the following is used for decision-making in C?

Question 4

4. Can the default label appear anywhere in a switch block?

Answer

No, only at the end

Answer

No, only at the beginning

Answer

Yes, anywhere

Answer

Only after all cases

Question 5

5. Which of the following is a relational operator?

Question 6

6. Which of the following is a compound condition?

Answer

x == y && y == z

Question 7

7. What happens when both if and else are without braces?

Answer

Only one executes

Answer

Only the next statement belongs to if/else

Question 8

8. How many else if clauses can be used after an if?

Answer

Cannot use with if

Question 9

9. Which of the following can be nested?

Answer

All of the above

Question 10

10. Which of the following is the correct syntax of an if statement in C?

Answer

if condition then { }

Answer

if = condition { }

Answer

if: condition { }

Answer

if (condition) { }

Question 11

11. What is the output of:

Answer

intf("Equal");

Question 12

12. Which construct is used for multi-way branching?

Question 13

13. What is the purpose of the else block?

Answer

Executes when if is false

Answer

Terminates the loop

Answer

Executes when if is true

Answer

Checks a new condition

Question 14

14. Which operator gives highest precedence in decision making?

Question 15

15. Which keyword can transfer control to a label in C?

Question 16

16. Which operator is used in ternary condition?

Question 17

17. Which of these expressions is evaluated first?

Answer

a || b && c

Answer

a && b || c

Answer

a == b && c

Question 18

18. Which operator is used for logical OR in C?

Question 19

19. Which operator is used for logical AND in C?

Question 20

20. Which data type is allowed in switch expression?

Answer

All of the above

Question 21

21. What will be the output of:

Answer

intf("%d", a > b ? a : b);

Answer

t a = 5, b = 10;

Question 22

22. What is the correct syntax for a switch statement?

Answer

switch(x) { case 1: ... }

Answer

switch x { case 1: ... }

Answer

switch = x { case 1: ... }

Answer

switch[x] { case 1: ... }

Question 23

23. Which is true for a valid if-else block?

Answer

Multiple else without if

Answer

Multiple ifs and one else

Answer

One if and multiple else

Answer

Only one if and one else

Question 24

24. Which is the default return type of a condition?

Answer

int (0 or 1)

Question 25

25. What is the purpose of the break statement in a switch case?

Answer

Continue the next iteration

Answer

Exit the switch block

Answer

Repeat the next case

Answer

Return to main

Question 26

26. What will this code print?

Answer

(!x) printf("Zero");

Question 27

27. Which of the following cannot be used in a switch case label?

Question 28

28. Can a switch statement handle strings?

Answer

Only with char

Answer

Only in C++

Question 29

29. Which decision construct is used for true/false evaluation?

Question 30

30. Can you nest switch statements?

Answer

Only two levels

Answer

Only with breaks

Question 31

31. Which of the following is a ternary operator?

Question 32

32. Which of the following must be a constant expression in a switch case?

Answer

case 1 + 1:

Answer

case x + y:

Question 33

33. What is the purpose of default in a switch?

Answer

Run always

Answer

Skip the switch

Answer

Run when no case matches

Answer

Acts like a comment

Question 34

34. What is the output of this code?

Answer

(a) printf("True");

Answer

se printf("False");

Question 35

35. What is the use of the default case in a switch?

Answer

To exit the program

Answer

Skips the loop

Answer

Executes if no match is found

Question 36

36. Which of the following is used to select one option from multiple choices?

Question 37

37. Which of the following keywords is not part of decision-making in C?

Question 38

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Total Questions:	37
Time Allowed:	20 Minutes
Total Marks:	37
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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