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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 operator gives highest precedence in decision making?

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

3. What is the output of:

intf("Equal");

(x == 10)

Equal

Error

No output

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

variable

'A'

100

5. Can a switch statement handle strings?

Yes

Only with char

Only in C++

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

if-else

switch

break

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

int (0 or 1)

char

string

float

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

if condition then { }

if: condition { }

if = condition { }

if (condition) { }

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

switch

while

10. Which of the following is a compound condition?

x == y && y == z

x++;

x == y

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

while

for

12. 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

13. Can you nest switch statements?

Only with breaks

Yes

Only two levels

14. 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: ... }

15. What is the output of this code?

True

se printf("False");

Error

(a) printf("True");

False

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

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

case

else

repeat

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

Only one

Cannot use with if

Up to two

Unlimited

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

case

continue

break

goto

20. What will this code print?

(!x) printf("Zero");

Nothing

Zero

21. What will be the output of:

Error

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

t a = 5, b = 10;

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

if-else ladder

for

switch

continue

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

Skips the loop

To exit the program

Executes if no match is found

To test 0

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

No, only at the beginning

Yes, anywhere

No, only at the end

Only after all cases

25. Which of the following can be nested?

All of the above

switch

if-else

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

Skip the switch

Acts like a comment

Run always

Run when no case matches

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

Fall-through occurs

Program terminates

Only default executes

Syntax error

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

Multiple ifs and one else

Only one if and one else

One if and multiple else

Multiple else without if

29. Which of the following is a ternary operator?

? :

switch

if-else

while

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

do-while

switch

goto

while

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

Repeat the next case

Continue the next iteration

Exit the switch block

Return to main

32. Which of these expressions is evaluated first?

!a && b

a && b || c

a || b && c

a == b && c

33. Which of the following is a relational operator?

34. Which operator is used in ternary condition?

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

case "A":

case x + y:

case 1 + 1:

case a:

36. Which data type is allowed in switch expression?

char

All of the above

int

enum

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

Only one executes

None

Error

Only the next statement belongs to if/else

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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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