小数。C# 中的 CompareTo()方法
原文:https://www . geesforgeks . org/decimal-compare to-method-in-c-sharp/
此方法用于将当前实例与指定的对象或小数进行比较，并返回其相对值的指示。该方法的重载列表中有 2 种方法如下:
- Comparison (decimal) method
- Comparison (object) method
小数。比较法
此方法用于将当前实例与指定的 Decimal 对象进行比较，并返回它们的相对值的比较结果。
语法:
public int CompareTo (decimal value);
这里，它将对象与这个实例进行比较。
返回值:返回一个 32 位有符号数，表示当前实例和值参数的相对值，如下所示:
- 小于零:如果当前实例<值
- 如果当前实例=值，则为零:
- 大于零:如果当前实例>值
下面的程序说明了小数的使用。比较(十进制)方法
例 1:
c
// C# program to demonstrate the
// Decimal.CompareTo(Double) Method
using System;
class GFG {
// Main Method
public static void Main()
{
// Declaring and initializing value1
decimal value1 = 10;
// Declaring and initializing value2
decimal value2 = 20;
// compare both decimal value
// using CompareTo() method
int status = value1.CompareTo(value2);
// checking the status
if (status > 0)
Console.WriteLine("{0} is greater than {1}",
value1, value2);
else if (status < 0)
Console.WriteLine("{0} is less than {1}",
value1, value2);
else
Console.WriteLine("{0} is equal to {1}",
value1, value2);
}
}
输出:
10 is less than 20
例 2:
c
// C# program to demonstrate the
// Decimal.CompareTo(Double) Method
using System;
class GFG {
// Main Method
public static void Main()
{
// calling get() method
get(5, 7);
get(30, 20);
get(10, 20);
get(7, -12);
}
// defining get() method
public static void get(decimal value1,
decimal value2)
{
// using CompareTo() method
int status = value1.CompareTo(value2);
// checking the status
if (status > 0)
Console.WriteLine("{0} is greater than {1}",
value1, value2);
else if (status < 0)
Console.WriteLine("{0} is less than {1}",
value1, value2);
else
Console.WriteLine("{0} is equal to {1}",
value1, value2);
}
}
输出:
5 is less than 7
30 is greater than 20
10 is less than 20
7 is greater than -12
小数。比较对象方法
此方法用于将当前实例与指定对象进行比较，并返回它们相对值的比较结果。
语法:
public int CompareTo (object value);
这里，它将对象与这个实例进行比较，或者为 null。
返回值:返回一个 32 位有符号数，表示当前实例与值参数的相对值，如下所示:
- is less than zero: If the current instance < value
- Zero: If the current instance = value
- is greater than zero: If the current instance > value
异常:如果值不为空，则抛出参数异常。
下面的程序说明了小数的使用。比较(对象)方法
例 1:
c
// C# program to demonstrate the
// Decimal.CompareTo(object) Method
using System;
class GFG {
// Main Method
public static void Main()
{
try {
// Declaring and initializing value1
decimal value1 = 10;
// Declaring and initializing value2
object value2 = (decimal)9.8765400E+2;
// compare both decimal value
// using CompareTo() method
int status = value1.CompareTo(value2);
// checking the status
if (status > 0)
Console.WriteLine("{0} is greater than {1}",
value1, value2);
else if (status < 0)
Console.WriteLine("{0} is less than {1}",
value1, value2);
else
Console.WriteLine("{0} is equal to {1}",
value1, value2);
}
catch (ArgumentException e)
{
Console.WriteLine("value2 must be decimal");
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}
输出:
10 is less than 987.654
例 2: 为ArgumentException
c
// C# program to demonstrate the
// Decimal.CompareTo(object) Method
using System;
using System.Globalization;
class GFG {
// Main Method
public static void Main()
{
try {
// Declaring and initializing value1
decimal value1 = 10;
// Declaring and initializing value2
object value2 = 1 / 3;
// using CompareTo() method
int status = value1.CompareTo(value2);
// checking the status
if (status > 0)
Console.WriteLine("{0} is greater than {1}",
value1, value2);
else if (status < 0)
Console.WriteLine("{0} is less than {1}",
value1, value2);
else
Console.WriteLine("{0} is equal to {1}",
value1, value2);
}
catch (ArgumentException e)
{
Console.WriteLine("value2 must be decimal");
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}
输出:
value2 must be decimal
Exception Thrown: System.ArgumentException
参考:
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