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ECAT Computer Decision Constructs Test Online

Mustansar KhanLast Updated: May 1, 2025

ECAT Computer Science Decision Constructs Test

ECAT Computer Science Chapter 21 Decision Constructs Online Test

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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ECAT Decision Constructs Test Online MCQs

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

while

switch

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

goto

switch

while

do-while

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

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

switch = x { case 1: ... }

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

switch x { case 1: ... }

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

if: condition { }

if = condition { }

if (condition) { }

if condition then { }

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

100

'A'

variable

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

Repeat the next case

Return to main

Exit the switch block

Continue the next iteration

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

8. What will this code print?

(!x) printf("Zero");

Nothing

Zero

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

Skip the switch

Run when no case matches

Run always

Acts like a comment

10. What will be the output of:

Error

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

t a = 5, b = 10;

11. Can you nest switch statements?

Only with breaks

Yes

Only two levels

12. Which of these expressions is evaluated first?

a && b || c

!a && b

a == b && c

a || b && c

13. Which of the following can be nested?

if-else

switch

All of the above

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

case "A":

case x + y:

case a:

case 1 + 1:

15. What is the output of this code?

(a) printf("True");

se printf("False");

True

Error

False

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

No, only at the end

No, only at the beginning

Only after all cases

Yes, anywhere

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

string

float

char

int (0 or 1)

18. Which operator is used in ternary condition?

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

else

case

repeat

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

Unlimited

Cannot use with if

Only one

Up to two

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

Syntax error

Program terminates

Only default executes

Fall-through occurs

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

Only one if and one else

One if and multiple else

Multiple ifs and one else

Multiple else without if

23. Which data type is allowed in switch expression?

All of the above

char

int

enum

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

To exit the program

Skips the loop

To test 0

Executes if no match is found

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

continue

case

goto

break

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

27. What is the output of:

No output

Error

Equal

(x == 10)

intf("Equal");

28. Which of the following is a relational operator?

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

for

while

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

if-else

break

switch

31. Which operator gives highest precedence in decision making?

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

Only one executes

Error

None

Only the next statement belongs to if/else

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

continue

for

switch

if-else ladder

34. Can a switch statement handle strings?

Yes

Only in C++

Only with char

35. Which of the following is a ternary operator?

switch

? :

if-else

while

36. Which of the following is a compound condition?

x++;

x == y

x == y && y == z

37. What is the purpose of the else block?

Executes when if is false

Executes when if is true

Checks a new condition

Terminates the loop

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Mustansar KhanLast Updated: May 1, 2025

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ECAT Computer Decision Constructs Test Online

ECAT Computer Science Decision Constructs Test

ECAT Computer Science Chapter 21 Decision Constructs Online Test

ECAT Decision Constructs Test Online MCQs

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Mustansar Khan

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ECAT Computer Science Decision Constructs Test

ECAT Computer Science Chapter 21 Decision Constructs Online Test

ECAT Decision Constructs Test Online MCQs

Uncategorized

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Mustansar Khan

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