Computer Decision Constructs Test Online

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Question 1

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

Question 2

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

Question 3

3. Which data type is allowed in switch expression?

Answer

All of the above

Question 4

4. What is the purpose of the else block?

Answer

Executes when if is false

Answer

Checks a new condition

Answer

Executes when if is true

Answer

Terminates the loop

Question 5

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

Answer

Cannot use with if

Question 6

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

Question 7

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

Answer

if-else ladder

Question 8

8. 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 9

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

Answer

Executes if no match is found

Answer

Skips the loop

Answer

To exit the program

Question 10

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

Question 11

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

Answer

if = condition { }

Answer

if (condition) { }

Answer

if condition then { }

Answer

if: condition { }

Question 12

12. What will be the output of:

Answer

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

Answer

t a = 5, b = 10;

Question 13

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

Question 14

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

Question 15

15. Which operator is used in ternary condition?

Question 16

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

Answer

No, only at the beginning

Answer

Only after all cases

Answer

No, only at the end

Answer

Yes, anywhere

Question 17

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

Answer

Run always

Answer

Run when no case matches

Answer

Skip the switch

Answer

Acts like a comment

Question 18

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

Answer

Only the next statement belongs to if/else

Answer

Only one executes

Question 19

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

Question 20

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

Answer

Fall-through occurs

Answer

Syntax error

Answer

Only default executes

Answer

Program terminates

Question 21

21. Can you nest switch statements?

Answer

Only with breaks

Answer

Only two levels

Question 22

22. Which of the following is a ternary operator?

Question 23

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

Answer

Multiple ifs and one else

Answer

Only one if and one else

Answer

Multiple else without if

Answer

One if and multiple else

Question 24

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

Question 25

25. Which of the following can be nested?

Answer

All of the above

Question 26

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

Question 27

27. Which operator gives highest precedence in decision making?

Question 28

28. Which of the following is a compound condition?

Answer

x == y && y == z

Question 29

29. What will this code print?

Answer

(!x) printf("Zero");

Question 30

30. What is the output of:

Answer

intf("Equal");

Question 31

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

Answer

case 1 + 1:

Answer

case x + y:

Question 32

32. Which of the following is a relational operator?

Question 33

33. Can a switch statement handle strings?

Answer

Only in C++

Answer

Only with char

Question 34

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

Answer

int (0 or 1)

Question 35

35. Which of these expressions is evaluated first?

Answer

a || b && c

Answer

a && b || c

Answer

a == b && c

Question 36

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

Answer

Return to main

Answer

Exit the switch block

Answer

Repeat the next case

Answer

Continue the next iteration

Question 37

37. What is the output of this code?

Answer

se printf("False");

Answer

(a) printf("True");

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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