.386.model flat,stdcall
.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.code
main PROCmov eax,5add eax,6INVOKE ExitProcess,0
main ENDP
END main
2:基础汇编语言展示增加变量的访问
.386.model flat,stdcall
.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
sum DWORD 0.code
main PROCmov eax,5add eax,6mov sum,eaxINVOKE ExitProcess,0
main ENDP
END main
3:BYTE数据定义
.386.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
value1 BYTE 'A'
value2 BYTE 0
value3 BYTE 255
value4 SBYTE -128
value5 SBYTE +127
value6 BYTE ?
value7 BYTE 10h
value8 BYTE 20hvalue9 DB 255;传统数据伪指令
value10 DB -128;传统数据伪指令list BYTE 10,20,30,40,50list2 BYTE 10,20,30,40,50BYTE 60,70,80,90,100list3 BYTE 10,32,41h,00100010b
list4 BYTE 0Ah,20h,'a',22h.code
main PROCINVOKE ExitProcess,0
main ENDP
END main
4:BYTE定义字符串
.386.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
;多个字节数值初始化必须用逗号隔开,但字符串是个例外要不然后每个字节都要用逗号,很麻烦
greeting1 BYTE "Good afternoon",0
greeting2 BYTE "Good night",0greeting3 BYTE "Welcome to the Demo program "BYTE "created by me .",0dh,0ahBYTE "If you wish to modify this program, please "BYTE "send me a copy.",0dh,0ah,0;行连续符(\)把两个源代码连在一起
greeting4 BYTE "Welcome to the Demo program "
greeting5 \BYTE "Welcome to the Demo program ".code
main PROCINVOKE ExitProcess,0
main ENDP
END main
5:DUP操作符分配空间赋初始值,DUP使用一个整数表达式作为计数器,为多个数据分配存储空间
.386.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
dup1 BYTE 20DUP(0);20个字节,值都为0
dup2 BYTE 20DUP(?);20个字节,未补始化
dup3 BYTE 20DUP("STACK");20个字节,赋字符串.code
main PROCINVOKE ExitProcess,0
main ENDP
END main
6:WORD数据定义
.386.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
word1 WORD 65535;最小无符号数
word2 SWORD -32768;最小有符号数
word3 WORD ?;未初始化,无符号;传统数据伪指令
word4 DW 65535;无符号
word5 DW -32768;有符号mylist WORD 1,2,3,4,5
array WORD 5DUP(?);5个数值,未初始化.code
main PROCINVOKE ExitProcess,0
main ENDP
END main
7:DWORD数据定义 DWORD还可以用于声明一种变量,这种变量的包含另一个变量(就是保存地址)
.386.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
value1 DWORD 12345678h ;无符号
value2 SDWORD -2147483648;有符号
value3 DWORD 20DUP(?);无符号数组;传统数据伪指令
value4 DD 12345678h ;无符号
value5 DD -2147483648;有符号;DWORD还可以用于声明一种变量,这种变量的包含另一个变量pValue1 DWORD value1 ;value1的地址
pValue2 DWORD value2 ;value2的地址mylist DWORD 1,2,3,4,5.code
main PROCINVOKE ExitProcess,0
main ENDP
END main
8:QWORD数据定义
.386.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
value1 QWORD 1234567812345678h;传统伪指令
value2 DQ 1234567812345678h.code
main PROCINVOKE ExitProcess,0
main ENDP
END main
9:BCD压缩数据定义 MASM使用TBYTE伪指令来定义BCD变量
.386.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
intVal TBYTE 80000000000000001234h ;有效定义
;intVal TBYTE -1234 无效;浮点数据使用压缩BCD码,要通过浮点寄存器
posVal REAL8 1.5
bcdVal TBYTE ?.code
main PROCfld posVal ;加载到浮点堆栈fbstp bcdVal ;向上舍入到2,压缩BCD码值INVOKE ExitProcess,0
main ENDP
END main
10:REAL浮点数据定义
.386.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
rVal1 REAL4 -1.2;短实数 有效数字6位
rVal2 REAL8 3.2E-260;长实数 有效数字15位
rVal3 REAL10 4.6E+4096;扩展精度实数 有效数字19位
ShortArray REAL4 20DUP(0.0);传统数据伪指令
rVal4 DD -1.2
rVal5 DQ 3.2E-260
rVal6 DT 4.6E+4096.code
main PROCINVOKE ExitProcess,0
main ENDP
END main
BigDecimal类longValueExact()方法 (BigDecimal Class longValueExact() method) longValueExact() method is available in java.math package. longValueExact()方法在java.math包中可用。 longValueExact() method is used to convert this BigDecimal to an exact long val…
var ss "3.333";var type /^[0-9]*[1-9][0-9]*$/;var re new RegExp(type);alert(ss.match(re));if (ss.match(re) null) {alert("请输入大于零的整数!");return;} 转载于:https://www.cnblogs.com/lingxzg/archive/2012/08/02/2620543.html
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