Sethu Testing C#

1. Which of the following is a valid variable declaration in C#? A) int 1number; B) int number1; C) number1 int; D) int number 1;

• float number1;

• B) int number1;

• int number;

• string 1number;

2. What data type is used to store a true or false value in C#? A) int B) string C) bool D) char;

• C) bool

• object

• list

• float

3. How do you convert a string to an integer in C#? A) Convert.ToInt(string); B) int.Parse(string); C) string.ToInt(); D) Convert.Int(string);

• int.Convert(string);

• string.ToInteger();

• Convert.Int32(string);

• B) int.Parse(string);

4. What is the scope of a variable declared inside a method? A) Global B) Local C) Static D) Constant;

• B) Local

• Public

• Temporary

• Instance

5. Which of the following is a constant in C#? A) const int x = 10; B) int x = 10; C) static int x = 10; D) var x = 10;

• const float y = 10.0;

• readonly int x = 10;

• dynamic x = 10;

• A) const int x = 10;

6. What will be the output of the following code? MessageBox.Show("Hello, World!"); A) Hello, World! B) MessageBox C) Error D) Nothing;

• MessageBox.Show()

• Hello, Universe!

• A) Hello, World!

• Goodbye, World!

7. Which method would you use to find the maximum of two numbers in C#? A) Math.Max() B) Math.High() C) Math.Top() D) Math.Bigger();

• Math.Compare()

• Math.MaxValue()

• A) Math.Max()

• Math.Greater()

8. What does the Math.Round() function do? A) Rounds a number to the nearest integer B) Rounds a number down C) Rounds a number up D) Returns the decimal part of a number;

• Truncates a number to an integer

• A) Rounds a number to the nearest integer

• Rounds a number to the nearest hundred

• Rounds a number to the nearest tenth

9. Which of the following is an example of an if statement? A) if (x > 10) { Console.WriteLine(x); } B) if x > 10 { Console.WriteLine(x); } C) if (x > 10) Console.WriteLine(x); D) Both A and C;

• if (x > 10) Console.WriteLine;

• if (x > 10) { Console.WriteLine; }

• if x > 10: Console.WriteLine(x);

• D

10. What is the default value of an uninitialized int variable in C#? A) 0 B) null C) undefined D) 1;

• -1

• A) 0

• true

• 3.14