High Precision Decimal Type in C#

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Questions and Answers

Where are value types stored in C#?

  • Register
  • Memory
  • Heap
  • Stack (correct)

Which of the following is a complex type in C#?

  • Float
  • Struct (correct)
  • Boolean
  • Double

What is the size assumption for the char data type in C#?

  • 4 bytes
  • 8 bytes
  • 1 byte
  • 2 bytes (correct)

Which data type is used to hold numbers in C#?

<p>Numeric (B)</p> Signup and view all the answers

In C#, which type is used to hold numbers with fractional parts?

<p>Decimal (B)</p> Signup and view all the answers

When do we use the Boolean data type in C#?

<p>To test conditions during program execution (C)</p> Signup and view all the answers

Which of the following data types is suitable for storing large, precise decimal values?

<p>decimal (A)</p> Signup and view all the answers

Which of the following is an unsigned integer data type?

<p>ushort (B)</p> Signup and view all the answers

What is the purpose of the 'const' keyword in C#?

<p>To create a constant value (D)</p> Signup and view all the answers

Which of the following is a user-defined reference type?

<p>class (C)</p> Signup and view all the answers

What is the purpose of an operator in C#?

<p>To perform mathematical or logical operations (D)</p> Signup and view all the answers

What is the correct way to assign a value to a variable in C#?

<p>variableName = value; (B)</p> Signup and view all the answers

How can you declare and initialize a variable in a single statement in C#?

<p>type variableName = value; (B)</p> Signup and view all the answers

What is the purpose of the const keyword in C#?

<p>To declare a variable whose value cannot be changed during program execution. (A)</p> Signup and view all the answers

What is the difference between a value type and a reference type in C#?

<p>Value types store their data directly in memory, while reference types store a reference to the data in memory. (A)</p> Signup and view all the answers

How can you accept input from the user and store it in a variable in C#?

<p>Using the <code>Console.ReadLine()</code> method and converting the input to the desired data type. (C)</p> Signup and view all the answers

What is the purpose of initializing a variable with a value at the time of declaration in C#?

<p>To ensure that the variable is assigned a valid value before it is used. (B)</p> Signup and view all the answers

Flashcards

Where are value types stored in C#?

Stored on the stack.

What is a struct in C#?

A complex type that can contain fields, methods, and other members.

Size of the char data type in C#?

The char data type occupies 2 bytes.

What is a numeric data type used for in C#?

Used to store numeric values.

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Data type for fractional numbers in C#?

Data type for storing numbers with fractional parts.

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When to use Boolean data type?

Used for testing conditions during program execution.

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Which type for large, precise decimals?

Suitable for storing large, precise decimal values.

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What is ushort?

An unsigned integer data type.

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'const' keyword purpose in C#?

To create a constant value.

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What is class in C#?

A user-defined reference type.

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What is the purpose of an operator in C#?

To perform mathematical or logical operations

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Correct way to assign a value in C#?

variableName = value;

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Declare and initialize a variable?

type variableName = value;

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Purpose of const keyword in C#?

To declare a variable whose value cannot be changed during program execution.

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Value vs. reference types in C#?

Value types store data directly, reference types store a reference to the data's memory location.

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How to accept user input in C#?

Using Console.ReadLine() and converting the input to the desired data type.

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Why initialize variables upon declaration?

To ensure the variable has a valid value before it is used, preventing errors.

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Study Notes

Data Types in C#

  • Value types are stored on the stack in C#.
  • A complex type in C# is a Struct.

Data Types

  • The char data type in C# assumes a size of 16 bits (2 bytes) and can hold a single Unicode character.
  • The int data type is used to hold numbers in C#.
  • The double data type is used to hold numbers with fractional parts in C#.
  • The Boolean data type is used to hold true or false values in C# and is typically used for conditional statements and logical operations.

Data Types for Specific Scenarios

  • The decimal data type is suitable for storing large, precise decimal values.
  • The uint data type is an unsigned integer data type.

Keywords and Operators

  • The 'const' keyword is used to declare a constant field or a local whose value is evaluated at compile time.
  • The purpose of an operator in C# is to perform operations on variables and values.
  • The correct way to assign a value to a variable in C# is using the assignment operator (=).
  • A variable can be declared and initialized in a single statement in C# using the assignment operator (=).

Variable Initialization and User Input

  • Initializing a variable with a value at the time of declaration in C# makes the code more readable and helps to avoid null reference exceptions.
  • The Console.ReadLine() method is used to accept input from the user and store it in a variable in C#.

Value Types and Reference Types

  • A value type stores a value directly, whereas a reference type stores a memory address that points to the location of the value.
  • Examples of value types include int, bool, and enum, while examples of reference types include classes, arrays, and interfaces.

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