1. What does the "++" operator do in C++?

Answer: a) It increments the value of a variable by 1

2. Which of the following is the correct syntax for declaring a variable in C++?

Answer: a) int x;

3. What is the purpose of the "cin" object in C++?

Answer: b) To input data from the console

4. Which keyword is used to define a function in C++?

Answer: d) None of the above

5. What does the "endl" manipulator do in C++?

Answer: b) It inserts a new line character and flushes the output buffer

6. What is the output of the following code snippet? #include using namespace std; int main() { int x = 5; cout << "The value of x is: " << x << endl; return 0; }

Answer: c) The value of x is: 5;

7. What is the correct way to declare a constant in C++?

Answer: d) const int x = 10;

8. Which of the following is a valid C++ comment?

Answer: a) // This is a comment until the end of the line

9. What is the output of the following code snippet? #include using namespace std; int main() { int x = 10; if (x > 5) { cout << "x is greater than 5" << endl; } else { cout << "x is less than or equal to 5" << endl; } return 0; }

Answer: a) x is greater than 5

10. Which header file should be included to use mathematical functions like sqrt() and pow() in C++?

Answer: a) cmath