netmask calculator

I do not know whether the friends have studied windows with the calculator, anyway, after a small series of research found that Windows Natural Calculator is really strong, before all overlooked. Now, with the lazy snake, take a look at some of the advanced uses of Windows with calculators. How do I quickly open a calculator? 1, Win + R key combination, open th

　　1. Basic operation Basic operation and Calculator, support keyboard operation, mouse over the button hover, in addition to the number key will pop-up prompts, prompt behind the parentheses is keyboard operation shortcut keys. 　　2. Hover, streamline and minimize The calculator supports automatic hover of the screen edge. When you drag the calculator to the ed

Simple calculator written by JavaScript

calculation of the symbolExp_sum = ADD_SUB (exp)#Call Add_sub to calculate addition and subtraction returnExp_sum#float #返回计算结果defMain (exp): Exp= Exp.replace (' ',"')#Delete spaces in a string whileTrue:ret= Re.search ('\([^()]+\)', exp)#Match parentheses ifRet:#if it matches.Inner_bracket = Ret.group ()#use Group () to extract the bracketed content that matches tores = str (cal (Inner_bracket))#call Cal () to calculate the contents of parentheses and convert the returned result

(i)elifFIND_[INDEX-1] = ="-": #If two negative numbers are subtracted, they are added or subtracted ifTag = =True:res+=float (i)Else: Res-=float (i)Else: #case where I is empty when processing without parentheses ifI! ="": Res=float (i)returnResif __name__=='__main__': whileTrue:calc_input= Input ("Please enter a calculation formula \ n default to:%s:"%a). Strip ()Try: ifLen (calc_input) = =0:calc_input=a calc_input= R'%s'%calc_input#do special treatment t

@__create_say_zsq ()def __init__ (Self,num):Self.__result = num@__check_num_zsq@__create_say_zsq ("plus")def Jia (self,n):Self.__result + = nreturn self@__check_num_zsq@__create_say_zsq ("Minus")Def Jian (self,n):Self.__result-= nreturn self@__check_num_zsq@__create_say_zsq ("multiply")def Chen (self,n):Self.__result *= Nreturn selfDef show (self):Self.__say ("The result of the calculation is:%d"%self.__result)Print ("The result of the calculation is:%d"%self.__result)return selfdef clear (self)

The code is as follows:Import Java.awt.*;import javax.swing.*;p ublic class Gridframe extends JFrame {//define string array, assign a value to the display text of the button string str[] = {"MC", "MR", "MS", "m+", "←", "C", "%", "π", "7", "8", "9", "/", "4", "5", "6", "*", "1", "2", "3", "-", "0", ".", "=", "+"};p UBL IC Gridframe () {//define panel and set to Grid layout, 4 rows 4 columns, component horizontal, vertical spacing is 7JPanel pan = new JPanel ();p an.setlayout (New GridLayout (6, 4

I used to look at PHP when I wanted to do this, but there has been no time, this time finally took a sneak into the code more than the amount of project.First of all, the document structure, all in one folder is good, my example is the following.Start by entering the index.php file.Doing a couple of things.1. The number of passes that can be obtained by $get_[the "action" method and the $_request ["action"] method is rect, triangle or circle.2. The two classes of form.class.php and result.class.

This is my copy of a calculator, feel the process is relatively simple, so share. 1. Create a new file, find a material to put in a grain of wood 2. New layer, fill a black radial gradient 3. Draw a rectangle with rounded corners. The final painting here has a shape filler tool to draw, the right amount of graphics size adjustment is not easy to distort, but also suitable for Various sizes. Easy to modify. Fill style specific

defMUL_DIV (exp):#Calculate multiplication whileTrue:ret= Re.search ('[\d\.] +[\*\/]-? [\d\.] +', exp)ifRet:atom_exp=Ret.group () Res=atom_cal (ATOM_EXP) exp=exp.replace (Atom_exp, res)Else: returnFOMAT_EXP (exp)defFOMAT_EXP (exp):#after calculating the multiplication, the unified symbolExp=exp.replace ('--','+') Exp=exp.replace ('-+','-') Exp=exp.replace ('++','+') Exp=exp.replace ('+-','-') returnadd_sub (exp)defADD_SUB (exp):#calculate add and SubtractRet=re.findall ('[\-\+]

(atom_exp,res)Else: returnExpdefadd_sub (exp): RET= Re.findall ("[+-]?\d+ (?: \. \d+)?", exp)#Take out the numbers and symbols in front of the numbers FindAll returns a list to find all itemsExp_sum =0 forIinchRet:exp_sum= Exp_sum + float (i)#The string is taken out. returnExp_sumdefCAL (exp): Exp=MUL_DIV (exp) Exp=Format (exp) exp_sum=add_sub (exp)returnExp_sumdefMain (exp): Exp= Exp.replace (" ","") whileTrue:ret= Re.search ("\([^()]+\)", exp)ifRet:inner_bracket=Ret.group ()

This JSP page is designed to implement the ability to submit and receive data on the same page .There are a lot of shortcomings in this small program, I hope you will criticize.The implementation results are as follows:How to implement a simple calculator with JSP (c)

.]*] \) ', S_MATCH_STR). Group (1) s = S.replace (S_match_str, S_match_str_match) print (s) Else:print ("Call processing%s"%s_match_str) S_match_str_str=re.search (' \ ([+\-*/0-9.] *) \) ', s). Group (1)Ret=handler_expression (s_match_str_str) s = s.replace (S_match_str, str (ret)) print (s) Else:flag=false return s# no_braces_result=hadler_braces (' ( -1+ (2-5* ( -1)) * (2-5)) # Result=handler_expressi On (no_braces_result) # print (result) if __name__ = = ' __main__ ': While tru

　　JS Simple Calculator

1. Environment Construction Link: http://www.jianshu.com/p/094928ac0b732. qt Create CanvasNow you need to complete the adder, two numbers A and B are added, and the numbers A and B are entered by digital. Drag the element to complete the interface, such as. On the left there is a simple addition input and output display box, click on the calculation button below to start the calculation, to the right there is an output historical calculation of the page. You can see the name of each dragged elem

jquery Implementation Calculator

After Baidu, see the same shoes hint to modify the \phpstudy\apache2\conf\ in the httpd.conf file, the code is as follows Copy Code code as follows: ServerAdmin webmaster@163.com DocumentRoot "D:\www" ServerName ymywz.com Options Indexes FollowSymLinks AllowOverride All Order Allow,deny Allow from all Note: As a result of the code conflict problem, please change the above double title number to a single title number When you restart Apache after adding the

Import Java.util.Arrays; Import Java.util.Scanner; Simple calculator/infix expression suffix expression, derived results for reverse Polish number output//e.g. input: (11+2.2) *3.1+ (30*45)-((1.1+23) *3.3)/5.2//Convert to suffix expression: 11 2.2 + 3.1 * 30 45 * + 1.1 23 + 3.3 * 5.2////Output Result: 1375.6257692307693 public class Turnrpn {public static void main (string[] args) { Char[] s = GetChar (); String expression = getexpression (

, 0, WX. EXPAND), (button0, 0, WX. EXPAND), (Buttondot, 0, WX. EXPAND), (buttonequ, 0, WX. EXPAND), (buttonplus, 0, WX. EXPAND)] Buttoncls.bind (WX. Evt_button,self. ONBUTTONCLS) Buttonbck.bind (WX. Evt_button,self. ONBUTTONBCK) Buttonclose.bind (WX. Evt_button,self. Onbuttonclickclose) Button0. Bind (WX. Evt_button,self. ONBUTTONCLICK0) button1. Bind (WX. Evt_button,self. ONBUTTONCLICK1) button2. Bind (WX. Evt_button,self. OnButtonClick2) Button3. Bind (WX. Evt_button,self. ONBUTTONCLICK3) Butt

I. Overview of issues Using C language to implement a simple calculator, can be used to achieve the function of subtraction noun Explanation: function pointer: A pointer that is used to point to a function Array of function pointers: an array containing multiple function pointers callback function: A function, if the parameter has a function pointer, then this function is the callback function two, problem analysis This problem can be implemented wit