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Description: 、该个词法分析器要求至少能够识别以下几类单词：
a． 关键字：else if int return void while共6个，所有的关键字都是保留字，并且必须是小写；
b． 标识符：识别与C语言词法规定相一致的标识符，通过下列正则表达式定义：ID = letter (letter | digit)*；
c． 常数：NUM=(+ | - |ε)digit digit*(.digit digit* |ε)(e(+ | - |ε) digit digit* |ε)，letter = a|..|z|A|..|Z|，digit = 0|..|9，包括整数，如123, -123, +123等；小数，如123.45, +123.45, -123.45；科学计数法表示的常数，如+1.23e3，-2.3e-9；
d． 专用符号：+ - * / < <= > >= == != = , ( ) [ ] { } /* */；
Platform: |
Size: 1890 |
Author: dujuan |
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Description: 、该个词法分析器要求至少能够识别以下几类单词：
a． 关键字：else if int return void while共6个，所有的关键字都是保留字，并且必须是小写；
b． 标识符：识别与C语言词法规定相一致的标识符，通过下列正则表达式定义：ID = letter (letter | digit)*；
c． 常数：NUM=(+ | - |ε)digit digit*(.digit digit* |ε)(e(+ | - |ε) digit digit* |ε)，letter = a|..|z|A|..|Z|，digit = 0|..|9，包括整数，如123, -123, +123等；小数，如123.45, +123.45, -123.45；科学计数法表示的常数，如+1.23e3，-2.3e-9；
d． 专用符号：+ - * / < <= > >= == != = , ( ) [ ] { } /* */；
-, Which require at least a lexical analyzer can identify the following types of words: a. Keyword: else if int return void while a total of six, all keywords are reserved words and must be lowercase b. Identifier: Identification and C language provides consistent lexical identifiers, through the definition of the following regular expression: ID = letter (letter | digit)* c. Constants: NUM = (+ |- | Ε) digit digit* (. Digit digit* | ε) (e (+ |- | Ε) digit digit* | ε), letter = a | .. | z | A | .. | Z |, digit = 0 | .. | 9, including integer, such as 123,-123,+ 123, etc. decimals, such as 123.45,+ 123.45,-123.45 science express constant counting method, such as+ 1.23e3,-2.3e-9 d. Special symbols:+-*/
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Size: 2048 |
Author: dujuan |
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Description: 61505LCD的单片机驱动程序，此程序已在KEIL上调试成功-61505LCD microcontroller drivers, this procedure has been successful in KEIL debug
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Size: 37888 |
Author: jzt |
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Description: My solutions to Saratov Online Judge Problems(SGU), not all, but many of them-My solutions to Saratov Online Judge Problems(SGU), not all, but many of them...
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Size: 16384 |
Author: mukel |
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Description: 信号与系统基础知识包括连续信号与模型、离散信号与模型；常用信号变换包括Z变换、Chirp Z变换、FFT变换、DCT变换和Hilbert变换等；离散系统结构包括IIR、fir和Lattice结构；IIR滤波器设计包括模拟和数字低通、高-Basic knowledge of signals and systems, including continuous signal with the model, discrete signals and model common signal, including Z Transform Transform, Chirp Z Transform, FFT transform, DCT transform and Hilbert transform, etc. discrete system architecture including IIR, fir and Lattice structure IIR filter design, including analog and digital low-pass, high-
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Size: 3072 |
Author: 东 |
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Description: 結合符合ZigBee-2006 協定規範的Z-Stack 協定堆疊，使用者可用來進行ZigBee-2006 網狀網路即時定位系統的開發。-qq
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Size: 1864704 |
Author: cc |
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Description: 大家好，今天还是继续给大家带来C#的编程，利用C#写一个打字游戏，美化下 功能多增加点，也许还可以骗骗女孩子的欢心呢。哈哈！不说废话了 先看看程序如何 ，然后我们在分析，分析好了在开始设计，最后写代码。一步一步来。由于语音教程，就不多打字了！
由一个时钟来控制字母掉下来的状态。timer
97 ascii码 对应小写字母a
英文单词26字母
97+26=123
a-z-Hello, everyone, today or continue to give us C# programming, using C# to write a typing game, beautify the next multi-function increase in points, may also be able to please a girl Pianpian it.哈哈! Do not talk nonsense look at what the proper procedures and then we in the analysis and good at the beginning of the design, the last to write the code. Step by step. As the voice tutorials, no more typing in! By a clock to control the falling letters to state. timer 97 ascii codes corresponding to lower-case letters a English word 26 letters 97+26 = 123 az
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Size: 59392 |
Author: 张秀川 |
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Description: 此方法控制TextBox只收数字：0~9 , 也自可以定义其它可输入字符,如改成: 65~123,只允许输入: a~z和A~Z 等.-This method controls TextBox only accept numbers: 0 to 9, but also from other available input character can be defined, such as changed: 65 ~ 123, only allows the input: a ~ z and A ~ Z and so on.
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Size: 5120 |
Author: 赖海燕 |
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Description: 该个词法分析器要求至少能够识别以下几类单词：
a． 关键字：else if int return void while共6个，所有的关键字都是保留字，并且必须是小写；
b． 标识符：识别与C语言词法规定相一致的标识符，通过下列正则表达式定义：ID = letter (letter | digit)*；
c． 常数：NUM=(+ | - |ε)digit digit*(.digit digit* |ε)(e(+ | - |ε) digit digit* |ε)，letter = a|..|z|A|..|Z|，digit = 0|..|9，包括整数，如123, -123, +123等；小数，如123.45, +123.45, -123.45；科学计数法表示的常数，如+1.23e3，-2.3e-9；
d． 专用符号：+ - * / < <= > >= == != = , ( ) [ ] { } /* */；
-lexical analyzer
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Size: 2048 |
Author: 张凤 |
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Description: FM without noise
Fs = input( enter the value of Fs ) Sampling rate of signal
Fc = input( enter the value of Fc ) Carrier frequency
t = [0:Fs] /Fs Sampling times
x = sin(2*pi*20*t) +2*sin(2*pi*60*t) Channel
dev = input( enter the value of dev ) Frequency deviation in modulated signal
y = fmmod(x,Fc,Fs,dev) Modulate both channels.
z = fmdemod(y,Fc,Fs,dev) Demodulate both channels.
figure
subplot(3,1,1)
plot(x)
subplot(3,1,2)
plot(y)
subplot(3,1,3)
plot(z)
-FM without noise
Fs = input( enter the value of Fs ) Sampling rate of signal
Fc = input( enter the value of Fc ) Carrier frequency
t = [0:Fs] /Fs Sampling times
x = sin(2*pi*20*t) +2*sin(2*pi*60*t) Channel
dev = input( enter the value of dev ) Frequency deviation in modulated signal
y = fmmod(x,Fc,Fs,dev) Modulate both channels.
z = fmdemod(y,Fc,Fs,dev) Demodulate both channels.
figure
subplot(3,1,1)
plot(x)
subplot(3,1,2)
plot(y)
subplot(3,1,3)
plot(z)
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Size: 216064 |
Author: Gan JJ |
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Description: 首先对字母进行编号，小写字母a至z编号为1至26，大写字母A至Z分别编号27至52，这样每个字母都有唯一的一个序号，在发送内容时，我们以函数F(X)=X*X+X+1对发送字母的序号进行计算，就会获取个新的序号，对该序号再进行对52取余，该序号即为加密后的要发送字母的序号，这样就能达到加密的作用。-Number first letter lowercase letters a to z No. 1-26, No. 27-52 uppercase letters A to Z, respectively, so each letter has a unique serial number, sending content to the function F (X- ) = X* X+X+1 send letters number is calculated, it will get a new serial number, the serial number and then take the remainder of the 52, the serial number is the serial number of the letters to be sent encrypted, so that we can achieve encryption role.
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Size: 11264 |
Author: 熊猫 |
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Description: 魔方是一种常见的玩具。2010年7月，美国加利福尼亚州科学家利用计算机证明任意组合的魔方均可以在20步之内还原。作为一个入门级的程序员，我们决定先写一个验证魔方是否复原的程序。对于魔方的一个操作，我们用一个字母来表示。将魔方的一个面正对玩家，就有了前后上下左右六个面，分别用F(Front)，B(Back)，U(Up)，D(Down):，L(Left)，R(Right)来表示将这个面顺时针旋转90度，具体玩魔方的时候将右手覆盖到对应的面上，这六个操作时右手的旋转方向都是相同的。同时用X，Y，
Z，表示顺时针旋转中间一层，分别对应U，R，F。具体情况可以参照下图。与这九个操作对应的还有f,b,u,d,l,r,x,y,z，表示逆时针旋转。-magic cube
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Size: 1024 |
Author: charlie |
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Description: 1、该个词法分析器要求至少能够识别以下几类单词：
a．关键字：else if int return void while共6个，所有的关键字都是保留字，并且必须是小写；
b．标识符：识别与C语言词法规定相一致的标识符，通过下列正则表达式定义：ID = letter (letter | digit)*；
c．常数：NUM = digit digit*(.digit digit* |ε)(e(+ | - |ε) digit digit* |ε)，letter = a|..|z|A|..|Z|，digit = 0|..|9，包括整数，如123等。
d．专用符号：+ - * / < <= > >= == != = , ( ) [ ] { } ；
2、分析器的输入为由上述几类单词构成的程序，输出为该段程序的机内表示形式，即关键字、运算符、界限符变为其对应的机内符，常数使用二进制形式，标识符使用相应的标识符表指针表示。
3、词法分析器应当能够指出源程序中的词法错误，如不可识别的符号、错误的词法等。-Design of C_minus language lexical analyzer
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Size: 32768 |
Author: 陈景 |
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Description: 一个表达式x（）y==z的值为真，其中x，y，z都是整数。括号内可能出现的运算符包括：+、-、*、/、 ，请根据输入的x，y，z的值，输出括号内应填写的运算符（数据保证只有一个运算符满足条件）。
样例输入：292 123 415
样例输出：+
-An expression x () the value of y==z is true, where x, y, Z are all integers. Operators that may appear in brackets include:+,-,*, /, , depending on the value of the input y, x, Z, the output brackets should be filled in the operator (data to ensure that only one operator to meet the conditions).
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Size: 5120 |
Author: |
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Description: Challenge - Starship Captain
You are the captain of a starship. You have been tasked with finding and colonizing habitable planets in your galaxy.
Your home world is located at these coordinates: 123.123.99.1 X & 098.098.11.1 Y & 456.456.99.9 Z
Your coordinate system ranges from 000.000.00.0 to 999.999.99.9, and you live in a three-dimensional universe.
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Size: 77824 |
Author: MANOD |
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