C# - Operators Question and Answer
C# - Operators Question and Answer
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;
1. ++a++;
2. a += 1;
3. a ++ 1;
4. a = a +1;
5. a = +1;
- 1, 3
- 2, 4
- 3, 5
- 4, 5
2. 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);
byte b1 = 0xF7;
byte b2 = 0xAB;
byte temp;
temp = (byte)(b1 & b2);
Console.Write (temp + " ");
temp = (byte)(b1^b2);
Console.WriteLine(temp);
- 163 92
- 92 163
- 192 63
- 0 1
4. Which of the following are NOT Relational operators in C#.NET?
>=
!=
Not
<=
<>=
>=
!=
Not
<=
<>=
- 1, 3
- 2, 4
- 3, 5
- 4, 5
6. Which of the following statements is correct about the C#.NET code snippet given below?
int d;
d = Convert.Tolnt32( !(30 < 20) );
int d;
d = Convert.Tolnt32( !(30 < 20) );
- A value 0 will be assigned to d.
- A value 1 will be assigned to d.
- A value -1 will be assigned to d.
- The code reports an error.
7. Which of the following is the correct output for the C#.NET code snippet given below?
Console.WriteLine(13 / 2 + " " + 13 % 2);
Console.WriteLine(13 / 2 + " " + 13 % 2);
- 6.5 1
- 6.5 0
- 6 0
- 6 1
8. Which of the following statements are correct about the Bitwise & operator used in C#.NET?
The & operator can be used to Invert a bit.
The & operator can be used to put ON a bit.
The & operator can be used to put OFF a bit.
The & operator can be used to check whether a bit is ON.
The & operator can be used to check whether a bit is OFF.
The & operator can be used to Invert a bit.
The & operator can be used to put ON a bit.
The & operator can be used to put OFF a bit.
The & operator can be used to check whether a bit is ON.
The & operator can be used to check whether a bit is OFF.
- 1, 2, 4
- 2, 3, 5
- 3, 4
- 3, 4, 5
9. Which of the following are Logical operators in C#.NET?
&&
||
!
Xor
%
&&
||
!
Xor
%
- 1, 2, 3
- 1, 3, 4
- 2, 4, 5
- 3, 4, 5
10. 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?
- if ((n&16) == 16) Console.WriteLine("Third bit is ON");
- if ((n&8) == 8) Console.WriteLine("Third bit is ON");
- if ((n ! 8) == 8) Console.WriteLine("Third bit is ON");
- if ((n ^ 8) == 8) Console.WriteLine("Third bit is ON");