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### C# Programming :: Operators

1. Which of the following are the correct ways to increment the value of variable a by 1?

1. ++a++;
2. a += 1;
3. a ++ 1;
4. a = a +1;
5. a = +1;

2.  A. 1, 3 B. 2, 4 C. 3, 5 D. 4, 5 E. None of these

3. What will be the output of the C#.NET code snippet given below?

 byte b1 = 0xF7;
byte b2 = 0xAB;
byte temp;
temp = (byte)(b1 & b2);
Console.Write (temp + " ");
temp = (byte)(b1^b2);
Console.WriteLine(temp);


4.  A. 163 92 B. 92 163 C. 192 63 D. 0 1

5. Which of the following is NOT an Arithmetic operator in C#.NET?

6.  A. ** B. + C. / D. % E. *

7. Which of the following are NOT Relational operators in C#.NET?

1. >=
2. !=
3. Not
4. <=
5. <>=

8.  A. 1, 3 B. 2, 4 C. 3, 5 D. 4, 5 E. None of these

9. Which of the following is NOT a Bitwise operator in C#.NET?

10.  A. & B. | C. << D. ^ E. ~

11. Which of the following statements is correct about the C#.NET code snippet given below?

 int d;  d = Convert.ToInt32( !(30 20) );

12.  A. A value 0 will be assigned to d. B. A value 1 will be assigned to d. C. A value -1 will be assigned to d. D. The code reports an error. E. The code snippet will work correctly if ! is replaced by Not.

13. Which of the following is the correct output for the C#.NET code snippet given below?

Console.WriteLine(13 / 2 + " " + 13 % 2); 

14.  A. 6.5 1 B. 6.5 0 C. 6 0 D. 6 1 E. 6.5 6.5

15. Which of the following statements are correct about the Bitwise & operator used in C#.NET?

1. The & operator can be used to Invert a bit.
2. The & operator can be used to put ON a bit.
3. The & operator can be used to put OFF a bit.
4. The & operator can be used to check whether a bit is ON.
5. The & operator can be used to check whether a bit is OFF.

16.  A. 1, 2, 4 B. 2, 3, 5 C. 3, 4 D. 3, 4, 5 E. None of these

17. Which of the following are Logical operators in C#.NET?

1. &&
2. ||
3. !
4. Xor
5. %

18.  A. 1, 2, 3 B. 1, 3, 4 C. 2, 4, 5 D. 3, 4, 5 E. None of these

19. Suppose n is a variable of the type Byte and we wish, to check whether its fourth bit (from right) is ON or OFF. Which of the following statements will do this correctly?

20.  A.  if ((n&16) == 16) Console.WriteLine("Fourth bit is ON"); B. if ((n&8) == 8) Console.WriteLine("Fourth bit is ON"); C.  if ((n ! 8) == 8) Console.WriteLine("Fourth bit is ON"); D.  if ((n ^ 8) == 8) Console.WriteLine("Fourth bit is ON"); E.  if ((n ~ 8) == 8) Console. WriteLine("Fourth bit is ON");