System.Decimal Structure

Represents a decimal floating-point number.

Fields

Name	Description
static readonly	MinValue	The minimum value of a Decimal.
static readonly	MaxValue	The maximum value of a Decimal.
static readonly	Zero	Represents the number zero.
static readonly	One	Represents the number one.
static readonly	MinusOne	Represents the number negative one.
static readonly	DecimalPlaces	Represents the maximum number of decimal places for a Decimal value.

Constructors

Name	Description
public	Decimal(Int32[])	Initializes a new instance of the Decimal structure by using an array of integers.
public	Decimal(Int64)	Initializes a new instance of the Decimal structure by using a 64-bit signed integer.
public	Decimal(Double)	Initializes a new instance of the Decimal structure by using a double-precision floating-point number.
public	Decimal(Single)	Initializes a new instance of the Decimal structure by using a single-precision floating-point number.

Methods

Name	Description
public static	Abs	Returns the absolute value of a Decimal number.
public static	Add	Adds two Decimal values and returns the resulting Decimal.
public static	Compare	Compares two Decimal values and returns an integer that indicates whether the first value precedes, is equal to, or follows the second value in sort order.
public static	Parse	Converts the string representation of a number to its Decimal equivalent.
public static	Floor	Computes the integral part of a Decimal number.
public static	Round	Rounds a Decimal number to the nearest integral value.

Properties

Name	Description
public	sign	Returns a value indicating the sign of the Decimal number.
public	GetBits	Returns a 32-bit integer array that contains the service bits and the three 32-bit integers that store the value of this instance.

Examples

Basic Usage

decimal price = 19.99m;
decimal quantity = 3m;
decimal total = price * quantity;
Console.WriteLine($"Total cost: {total:C}"); // Example: Total cost: $59.97

Precision and Accuracy

The Decimal type is ideal for financial and monetary calculations due to its high precision and lack of rounding errors inherent in binary floating-point types like double.

double d1 = 0.1;
double d2 = 0.2;
double sumDouble = d1 + d2; // May not be exactly 0.3

decimal m1 = 0.1m;
decimal m2 = 0.2m;
decimal sumDecimal = m1 + m2; // Will be exactly 0.3m

Console.WriteLine($"Double sum: {sumDouble}");
Console.WriteLine($"Decimal sum: {sumDecimal}");