C#中的int、long、float、double等类型都占多少个字节的内存?

这个问题还真不知道，直接上测试代码，一目了然。

using System;
public static class Program
{
    public static void Main(string[] args)
    {
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(byte).Name.PadLeft(8), sizeof(byte).NumberPad(2),
            byte.MinValue.NumberPad(32, true), byte.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(sbyte).Name.PadLeft(8), sizeof(sbyte).NumberPad(2),
            sbyte.MinValue.NumberPad(32, true), sbyte.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(short).Name.PadLeft(8), sizeof(short).NumberPad(2),
            short.MinValue.NumberPad(32, true), short.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(ushort).Name.PadLeft(8), sizeof(ushort).NumberPad(2),
            ushort.MinValue.NumberPad(32, true), ushort.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(int).Name.PadLeft(8), sizeof(int).NumberPad(2),
            int.MinValue.NumberPad(32, true), int.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(uint).Name.PadLeft(8), sizeof(uint).NumberPad(2),
            uint.MinValue.NumberPad(32, true), uint.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(long).Name.PadLeft(8), sizeof(long).NumberPad(2),
            long.MinValue.NumberPad(32, true), long.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(ulong).Name.PadLeft(8), sizeof(ulong).NumberPad(2),
            ulong.MinValue.NumberPad(32, true), ulong.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(float).Name.PadLeft(8), sizeof(float).NumberPad(2),
            float.MinValue.NumberPad(32, true), float.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(double).Name.PadLeft(8), sizeof(double).NumberPad(2),
            double.MinValue.NumberPad(32, true), double.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s) scope:[{2}-{3}]",
            typeof(decimal).Name.PadLeft(8), sizeof(decimal).NumberPad(2),
            decimal.MinValue.NumberPad(32, true), decimal.MaxValue.NumberPad(32));
        Console.WriteLine("{0}: {1} byte(s)",
            typeof(bool).Name.PadLeft(8), sizeof(bool).NumberPad(2));
        Console.WriteLine("{0}: {1} byte(s)",
            typeof(char).Name.PadLeft(8), sizeof(char).NumberPad(2));
        Console.WriteLine("{0}: {1} byte(s) ",
            typeof(IntPtr).Name.PadLeft(8), IntPtr.Size.NumberPad(2));
        Console.ReadLine();
    }
    public static string NumberPad<T>(this T value, int length, bool right = false)
    {
        if (right)
        {
            return value.ToString().PadRight(length);
        }
        else
        {
            return value.ToString().PadLeft(length);
        }
    }
}

结果如下：

出处：https://www.tnblog.net/ylanks/article/details/6236

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