C# QUIZ 4

Created on May 13, 2020 By

Sirjana GhimireAcharya

C# Quiz 4

1 / 10

Which of the following property of Array class in C# gets a 64-bit integer, the total number of elements in all the dimensions of the Array?

Rank

LongLength

Length

None of the above.

2 / 10

2. 10 > 9 ? "10 is greater than 9” : "9 is greater than 10” is an example of _______

Ternary operator

Conditional operator

Greater than operator

Inverse operator

3 / 10

3. Which of the following gives the correct count of the constructors that a class can define?

1

2

Any number

None of the above

4 / 10

4. What will be the output of the following code snippet?

class program
{
static void Main(string[] args)
{
int num = 2;
fun1 (ref num);
Console.WriteLine(num);
Console.ReadLine();
}
static void fun1(ref int num)
{
num = num * num * num;
}
}

8

0

2

16

5 / 10

5. What is the output of this C# code?

int? i = 8 >> 5;
int? j = i > 0 ? i : null;
var a = j ?? int.MinValue;
Console.WriteLine(a);

1

null

0

-2147483648

6 / 10

6. Find a correct statement about C# exception

C# exception occrs at compile time

C# exception occrs at linking time

C# exception occrs at JIT compile time

C# exception occrs at run time

7 / 10

7. Find an invalid Main() method prototype, which is entry point in C#?

public static void Main()

public static int Main()

public static void Main(string[] s)

public static long Main(string[] args)

8 / 10

8. An array in C# starts with _____ index.

One

Zero

-1

None of the above

9 / 10

9. Find an invalid example of using C# var

var a = 3.141592;

var a = null;

var a = db.Stores;

var a = db.Stores.Single(p => p.Id == 1);

10 / 10

10. Which datatype should be more preferred for storing a simple number like 35 to improve execution speed of a program ?

long

int

short

sbyte

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