答案 0 :(得分:0)
答案 1 :(得分:0)
如果数字必须正确加或平衡,请使用小数。这包括人们可能手工完成的任何财务存储或计算,分数或其他数字。
如果数字的确切值不重要,请使用双倍速度。这包括图形,物理或其他物理科学计算,其中已经存在“有效位数”。
如需进一步的帮助,请参阅以下代码。
C# Type .Net Framework (System) type Signed? Bytes Occupied Possible Values
sbyte System.Sbyte Yes 1 -128 to 127
short System.Int16 Yes 2 -32768 to 32767
int System.Int32 Yes 4 -2147483648 to 2147483647
long System.Int64 Yes 8 -9223372036854775808 to 9223372036854775807
byte System.Byte No 1 0 to 255
ushort System.Uint16 No 2 0 to 65535
uint System.UInt32 No 4 0 to 4294967295
ulong System.Uint64 No 8 0 to 18446744073709551615
float System.Single Yes 4 Approximately ±1.5 x 10-45 to ±3.4 x 1038 with 7 significant figures
double System.Double Yes 8 Approximately ±5.0 x 10-324 to ±1.7 x 10308 with 15 or 16 significant figures
decimal System.Decimal Yes 12 Approximately ±1.0 x 10-28 to ±7.9 x 1028 with 28 or 29 significant figures
char System.Char N/A 2 Any Unicode character (16 bit)
bool System.Boolean N/A 1 / 2 true or false