CS201P Quiz 2 Set 2

Q1. What will be the output of the following code? int i = 0; while(i!=15){ cout << i << " "; i = i + 5; }

1. 0 5
2. 1 5 10
3. 0 5 10
4. 5 10

Correct answer: 0 5 10

Q2. Which of the following C++ statements is used to show output on the screen?

1. cout
2. cget
3. cerr
4. cin

Correct answer: cout

Q3. In C++, which of the following option has the correct meaning of the expression “a <= b” ?

1. a is less than or equal to b
2. a is less than b
3. a is greater than or equal to b
4. a is greater than b

Correct answer: a is less than or equal to b

Q4. What will be the output of following program? #include <iostream> using namespace std; int main() { int x = 5; while (x > 0) { x--; } cout << "Final value of x: " << x << endl; return 0; }

1. Final value of x: 5
2. Final value of x: 0
3. Final value of x: 2
4. Final value of x: 6

Correct answer: Final value of x: 0

Q5. In C/C++, the algebraic expression (b2-4ac) / 2a can be written as:

1. (b*b – 4*a*c) / (2*a)
2. b*b – 4*a* c/ 2*a
3. b*b – (4*a*c) / 2*a
4. b*b – 4* a*c / (2*a)

Correct answer: (b*b – 4*a*c) / (2*a)

Q6. What will be the output of the following code? int i = 1; while(i<10){ if (i % 2 == 0) cout << i << “ ”; i++; }

1. 2 4 8 10
2. 2 4 6 10
3. 2 4 6 8
4. 1 3 5 7

Correct answer: 2 4 6 8

Q7. Which of the following is an example of logical operator?

1. &&,||
2. <,>
3. /,%
4. +,*

Correct answer: &&,||

Q8. Which of the following option is used when working with complicated expressions in C++ ?

1. []
2. /
3. ()
4. {}

Correct answer: ()

Q9. Which of the following is an example of repetition structure?

1. cond
2. while
3. if-else
4. if

Correct answer: while

Q10. Which of the following C++ statements is used take input from the user?

1. cget
2. cerr
3. cin
4. cout

Correct answer: cin