Rounding Functions - C# Questions & Answers

This section of our 1000+ C# MCQs focuses on rounding functions in C# Programming Language.

1. Which among the given classes provides types of rounding functions?
a) Math
b) Process
c) System
d) Object
View Answer

Answer: a
Explanation: None.

2. Which of these methods is a rounding function of Math class?
a) Max()
b) Min()
c) Abs()
d) Round()
View Answer

Answer: d
Explanation: Round() rounds up a variable to nearest integer.

3. Which of these classes contains only floating point functions?
a) Math
b) Process
c) System
d) Object
View Answer

Answer: a
Explanation: Math class contains all the floating point functions that are used for general purpose mathematics methods. Example : sin(), cos(), exp(), sqrt() etc.

4. Which of these method returns a smallest whole number greater than or equal to variable X?
a) double Ciel(double X)
b) double Floor(double X)
c) double Max(double X)
d) double Min(double X)
View Answer

Answer: a
Explanation: Ciel(double X) returns the smallest whole number greater than or equal to variable X.

5. Which of these methods return a largest whole number less than or equal to variable X?
a) double Ciel(double X)
b) double Floor(double X)
c) double Max(double X)
d) double Min(double X)
View Answer

Answer: b
Explanation: double Floor(double X) returns a largest whole number less than or equal to variable X.

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6. Which of the following functions return absolute value of a variable?
a) Abs()
b) Absolute()
c) absolutevariable()
d) None of the mentioned
View Answer

Answer: a
Explanation: Abs() returns the absolute value of a variable.

7. What will be the output of the following C# code snippet?

```
 public class A
```
```
 {
```
```
     public int x;
```
```
     public int y;
```
```
     public void display() 
```
```
     {
```

         Console.WriteLine(x + " " + y);

```
     }
```
```
 }
```
```
 class Program
```
```
 {
```
```
     static void Main(string[] args)
```
```
     {
```
```
         A obj1 = new A();
```
```
         A obj2 = new A();
```
```
         obj1.x = 1;
```
```
         obj1.y = 2;
```
```
         obj2 = obj1;
```
```
         obj1.display();
```
```
         obj2.display();
```
```
     }
```
```
 }
```

a) 1 2 0 0
b) 1 2 1 2
c) 0 0 0 0
d) Run time exception
View Answer

Answer: b
Explanation: None.
Output:

 1 2 1 2

8. What will be the output of the following C# code snippet?

```
class Program
```
```
{
```
```
    static void Main(string[] args)
```
```
    {
```
```
        double x = 3.14;  
```
```
        int y = (int) Math.Abs(x);
```
```
        Console.WriteLine(y);
```
```
    }
```
```
}
```

a) 0
b) 3
c) 3.0
d) 3.1
View Answer

Answer: b
Explanation: None.
Output:

9. What will be the output of the following C# code snippet?

```
class Program
```
```
{
```
```
    static void Main(string[] args)
```
```
    {
```
```
        double x = 3.14;  
```
```
        int y = (int) Math.Ceiling(x);
```
```
        Console.WriteLine(y);
```
```
    }
```
```
}
```

a) 0
b) 3
c) 3.0
d) 4
View Answer

Answer: d
Explanation: Ceiling(double x) returns the smallest whole number greater than or equal to variable x.
Output:

10. What will be the output of the following C# code snippet?

```
class Program
```
```
{
```
```
    static void Main(string[] args)
```
```
    {
```
```
        double x = 3.14;  
```
```
        int y = (int) Math.Floor(x);
```
```
        Console.WriteLine(y);
```
```
    }
```
```
}
```

a) 0
b) 3
c) 3.0
d) 4
View Answer

Answer: b
Explanation: double Floor(double X) returns the largest whole number less than or equal to variable X. Here, the smallest whole number less than 3.14 is 3.
Output:

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