1. What is the extension of a C++ source file?

A) .cpp
B) .cc
C) .cxx

2. What is the syntax for declaring a variable in C++?

A) var int x;
B) int x;
C) variable x as int;

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

A) method
B) func
C) void

4. How do you output "Hello, World!" to the console in C++?

A) print("Hello, World!");
B) cout << "Hello, World!";
C) System.out.println("Hello, World!");

5. What is the correct way to comment a single line in C++?

A) // This is a comment
B) /* This is a comment */
C) -- This is a comment

6. Which data type is used to store whole numbers in C++?

A) float
B) int
C) char

7. What is the purpose of the `cin` object in C++?

A) To output data to the console
B) To read input from the console
C) To perform mathematical operations

8. What does the `++` operator do in C++?

A) Increment a variable by 1
B) Decrement a variable by 1
C) Multiply a variable by 2

9. Which header file is used for input and output operations in C++?

A) iostream
B) stdlib.h
C) math.h

10. What is the correct syntax for a for loop in C++?

A) for (i = 0; i < 10; i++)
B) loop (i = 0; i < 10; i++)
C) repeat (i = 0; i < 10; i++)