char -128 ~ +127 (1 Byte) short -32767 ~ + 32768 (2 Bytes) unsigned short 0 ~ 65536 (2 Bytes) int -2147483648 ~ +2147483647 (4 Bytes) unsigned int 0 ~ 4294967295 (4 Bytes) long == int long long -9223372036854775808 ~ +9223372036854775807 (8 Bytes) double 1.7 * 10^308 (8 Bytes...
char,short ,int ,long,long long,unsigned long long 速查表: char -128 ~ +127 (1 Byte) short -32767 ~ + 32768 (2 Bytes) unsigned short 0 ~ 65535 (2 Bytes) int -2147483648 ~ +2147483647 (4 Bytes) unsigned int 0 ~ 4294967295 (4 Bytes) long == int long long -...
char -128 ~ +127 (1 Byte) short -32767 ~ + 32768 (2 Bytes) unsigned short 0 ~ 65536 (2 Bytes) int -2147483648 ~ +2147483647 (4 Bytes) unsigned int 0 ~ 4294967295 (4 Bytes) long == int long long -9223372036854775808 ~ +9223372036854775807 (8 Bytes) double 1.7 * 10^308 (8 Bytes...
char,short,int,long,longlong,unsignedlonglong数据范围速查表:char-128~+127(1Byte)short-32767~+32768(2Bytes)unsignedshort0~65535(2Bytes)int-2147483648~+2147483647(4Bytes)unsignedint0~4294967295(4Bytes)long==intlonglong-9223372036854775808~+9223372036854775807(8Bytes)double1.7*10^308(8Bytes)unsignedint...
double 1.7 * 10^308 (8 Bytes) unsigned int 0 ～ 4294967295 long long的最大值:9223372036854775807 long long的最小值:-9223372036854775808 unsigned long long的最大值:18446744073709551615 __int64的最大值:9223372036854775807 __int64的最小值:-9223372036854775808 ...
char,short ,int ,long,long long,unsigned long long数据范围 2015-03-14 14:30 −速查表: char -128 ~ +127 (1 Byte)short -32767 ~ + 32768 (2 Bytes)unsigned short 0 ~ 65535 (2 Bytes)int -2147483648 ~ +2147483647 (4 Bytes)unsigned int 0 ~... ...
double 转 unsigned long可能丢失数据 double 8 bytes, unsigned long 4 bytes
这篇文章梳理一下Bits, Bytes and Integers——二进制unsigned以及Two-complement表示,十六进制这些事儿。 计算机中所有数据都是用二进制的0和1组成的,直接上知识点。 二进制 Unsigned以及Two-complement 同样的一串二进制数,按照有符号或者无符号两种不同的方式解析,就会得到不同的值,但是这个二进制数本身是不变的。
unsigned long: 4个字节 32位编译器 char ：1个字节 char*（即指针变量）: 4个字节（32位的寻址空间是2^32, 即32个bit，也就是4个字节。同理64位编译器）short int : 2个字节 int： 4个字节 unsigned int : 4个字节 float: 4个字节 double: 8个字节 long: 4个字节 long long: 8个字节 unsigned ...
short anUnsignedByte = 0; char anUnsignedShort = 0; long anUnsignedInt = 0; int firstByte = 0; int secondByte = 0; int thirdByte = 0; int fourthByte = 0; byte buf[] = getMeSomeData(); // Check to make sure we have enough bytes if(buf.length < (1 + 2 + 4)) doSomeErr...