if, if-else, nested if — C++ MCQs

1. What will be the output of the following code?
int x = 10;
if (x > 5)
cout << "Hello";
else
cout << "World";
(A) Hello
(B) World
(C) Error
(D) Nothing

2. What will the following code print?
int x = 5;
if (x == 5)
cout << "Yes";
(A) Yes
(B) No
(C) Error
(D) Nothing

3. What will be the output of this code?
int a = 3;
if (a > 5)
cout << "Greater";
else
cout << "Smaller";
(A) Greater
(B) Smaller
(C) 0
(D) Error

4. What will this code output?
int x = 7;
if (x < 5)
cout << "A";
else if (x == 7)
cout << "B";
else
cout << "C";
(A) A
(B) Error
(C) C
(D) B

5. Identify the error in the following code:
int x = 5
if (x > 0)
cout << "Positive";
(A) Missing semicolon after if
(B) Missing semicolon after variable declaration
(C) Wrong if syntax
(D) No error

6. What is the output?
int num = 10;
if (num % 2 == 0)
cout << "Even";
else
cout << "Odd";
(A) Odd
(B) Error
(C) Even
(D) 0

7. What will the following code display?
int x = 2, y = 3;
if (x > y)
cout << "X is greater";
else
cout << "Y is greater";
(A) X is greater
(B) Y is greater
(C) Error
(D) Nothing

8. What will be the output of this nested if code?
int a = 4, b = 8;
if (a > 5)
if (b > 5)
cout << "Both";
else
cout << "Only a";
else
cout << "None";
(A) Both
(B) Only a
(C) None
(D) Error

9. What will the code print?
int x = 0;
if (x)
cout << "True";
else
cout << "False";
(A) True
(B) 0
(C) Error
(D) False

10. Identify the output:
int x = 10;
if (x = 5)
cout << "Yes";
else
cout << "No";
(A) Yes
(B) No
(C) Error
(D) Nothing

11. What is the output of this code?
int x = 3;
if (x > 0 && x < 5)
cout << "Inside";
else
cout << "Outside";
(A) Inside
(B) Outside
(C) Error
(D) Nothing

12. What happens when this code runs?
int x = 4;
if (x > 5)
cout << "A";
else if (x > 3)
cout << "B";
else
cout << "C";
(A) A
(B) B
(C) C
(D) Error

13. Which statement is true about this code?
int x = 7;
if (x > 5)
if (x < 10)
cout << "Yes";
(A) Yes
(B) No
(C) Error
(D) Nothing

14. What will this code print?
int x = 2;
if (x == 1)
cout << "One";
else if (x == 2)
cout << "Two";
else
cout << "Other";
(A) One
(B) Other
(C) Two
(D) Error

15. Identify the error:
if (x > 5);
cout << "Hello";
(A) Extra semicolon after if
(B) Missing braces
(C) Syntax is correct
(D) Nothing

16. Output of the following code:
int x = 5;
if (x != 5)
cout << "No";
else
cout << "Yes";
(A) Yes
(B) No
(C) Error
(D) Nothing

17. What will the following code output?
int a = 10, b = 20;
if (a > b)
cout << "A";
else if (a < b)
cout << "B";
else
cout << "C";
(A) A
(B) B
(C) C
(D) Error

18. What will be printed?
int x = -1;
if (x > 0)
cout << "Positive";
else if (x < 0)
cout << "Negative";
else
cout << "Zero";
(A) Positive
(B) Error
(C) Zero
(D) Negative

19. What is the output?
int x = 5;
if (x > 2)
if (x < 10)
cout << "Inside";
else
cout << "Outside";
(A) Inside
(B) Outside
(C) Error
(D) Nothing

20. What will this code print?
int x = 0;
if (x == 0)
cout << "Zero";
else
cout << "Non-zero";
(A) Zero
(B) Non-zero
(C) Error
(D) Nothing