cfg calculator

principle:1. Change the middle order expression to follow-up expression2. The current character is a number, put that number in the stack3. The current character is the operator, take out two trees from the stack, according to operator operation, put the result of the operation into the stack4. Repeat until the character is finished, and there is only one element left in the stack, that is, the result of the operation PS: I do not handle, can only run 10 of the operation, if necessary can be ext

"Programming Marathon algorithm Directory"" 017-emacs Calculator" "Project download >>>"1 Topic DescriptionEmacs is called God's editor, and it comes with a calculator. Unlike other calculators, it is based on the suffix expression, which is the operator after the operand. For example, "2 3 +" is equivalent to the infix expression of "2 + 3".Ask you to implement a suffix expression for the

Since the computer desktop and mobile desktop can be free to change the theme, then give the calculator to replace the theme is not difficult, as long as the master of Photoshop to draw the Crystal button method, then design a crystal texture and is the crisp orange theme of the skin calculator is so easy! Creates a new file with a pixel size 300*400, a resolution of 100, and a canvas size of 1

-----------------------------------------------------Experimental Report-------------------------------------------------------- First, the purpose of the experimentA, Project description:Improved the Java calculator designed for the previous project and designed a feature-enhanced calculator. From the most basic add, subtract, multiply, divide, to the basic mathematical function processing, and then to the

Let's click "View" on the Windows7 system's calculator interface to see what we find. Click on the scientific type, the appearance of the interface is our students commonly used scientific calculator Continue to point to view, select the programmer, the following image of the interface is the programmer calculator interface, do you feel incredible? This can be

method One: At the beginning of the interface quickly find Enter the Win8.1 Start screen interface and click the down arrow at the bottom to enter more options, as shown in the following image: After that we can quickly find the calculator in more options, click Open, as shown in the following image: 　　Method Two: Use Win8.1 powerful search function to quickly find calculator In Win8.1 any

J2ME Application Example-a simple calculator implementation (with source code) Using the low-level user interface to make a simple calculator based on the Nokia S60 series, we hope to help. This article only contains the program code, if you need picture files and source code please send me an e-mail: cqucyf@263.net The source code is as follows Calcmidlet.java Package My.calc; Import javax.microedition

' | bc128$ echo "obase=10;ibase=16;80" | bc1284. Exponential operation:$ echo "5^5" | bc3125$ echo "(5^5) ^5" | bc298023223876953125Remember that the result of the first exponential operation is to add parentheses.5. Function library-based operationsBC supports the following functions:s (x): sine function (x is radians)C (x): cosine function (x is radians)A (x): Inverse tangent function (the result is radians)l (x): Natural logarithm functionE (x): exponential function with E as the baseJ (n,x)

The code is as follows Copy Code Body, Div, input {font:12px Arial;} . Calculatorbutton {Text-align:center;width:73px;} . calculatorButton2 {Text-align:center;width:154px;}*+html. CalculatorButton2 {width:157px;} #calculator. Buttonarea {padding:3px;Border-color: #455690 #a6b4cf #a6b4cf #455690;Border-style:solid;border-width:1px;} #calculatorOutput {padding:2px; BORDER:2PX inset; margin:2px;} #topbar {Position:absolute;Border-right:

Environment: Host: WIN10 Express Installation: 1. Install Express-generator Enter command: NPM install-g Express-generator 2. Installation of Express Enter command: NPM Install-g Express 3. Verify that the installation is successful Enter command: express-v View Help: Express--help To establish a project: EXPRESS-E Calculator CD Calculator npm Install Run

Win7 System Word document calculator function how to use? The specific methods are as follows: 1, in fact, Word has already built a simple version of the "Calculator" component, located in the "file" → "option" → "Custom Ribbon", click "Not in the Ribbon command"; 2, and then from the list to find a component named "Calculation", through the "Add" button to add it to a new tab after it; 2, add a

1. About BCBC is an arbitrary precision calculator language, usually under Linux as a calculator, easy to use. Equivalent to a calculator under Windows.2. Supported operatorsBasic Mathematical Operations: + addition-Subtraction * Multiplication/division ^ exponent% remainderexpressions, logical operations, and mathematical functions are also supported.3. UseEnter

Original: Java Swing development of the simplest calculator source codeSource code: Http://www.zuidaima.com/share/1550463496948736.htmA simple calculator written in Java Swing/*** @author www.zuidaima.com*/package com.zuidaima.swing;import java.awt.borderlayout;import java.awt.EventQueue; Import Javax.swing.jframe;import Javax.swing.jpanel;import Javax.swing.border.emptyborder;import Javax.swing.jmenubar;im

Swift project development Combat-Multi-version iphone calculator based on layered architecture-live lessonGood news: Buy this course to send the relevant instructor book +50 coins course coupons! There is better news, in order to give back to new and old students, this time to take the live free, recording the form of charges! Buy This course give Dongsheng teacher value 69 Yuan the first "swift Development Guide" in China, and give 50 Yuan coupon

The examples in this article describe the Java implementation of a simple calculator class. Share to everyone for your reference. as follows: Package chap; Import Java.awt.BorderLayout; Import Java.awt.Color; Import Java.awt.FlowLayout; Import Java.awt.GridLayout; Import java.awt.event.ActionEvent; Import Java.awt.event.ActionListener; Import Java.text.DecimalFormat; Import Javax.swing.JButton; Import Javax.swing.JFrame; Import Javax.swing.JPane

1, enter the Meteo program interface, if the system desktop, press the "Windows" key, switch to the Metro interface, in the blank click "Right mouse button." 2. Click on all the programs that appear at the bottom of the screen. 3, in all the program interface, pull the screen interface, find the calculator in the Windows attachment. 4, click on "Calculator", you can use. Win8

This time, we use C ++ for the development language and Qt for the development environment. There is nothing to explain when selecting C ++. Why Qt is selected Qt is free of charge Qt is a cross-platform development that can be released on multiple platforms, such as Windows, Linux, and Symbian ). Popular technologies (such as Layout and XML) and architectures used in Qt development. After learning Qt, it is easier to get started in other environments. Installation Steps Qt has done

The Android 4.4.4 Calculator Calculator is ported and can be used independently in Android studio. The complete code has been pushed to my GitHub, linked at the end of the article.Here's a look at:This is the effect on the Samsung phone, and the same as the calculator UI I used before on the Nexus, native. Of course, with the source code, we can customize the eff

C language implementation of a calculator Today, I read compilation principles and practices and saw the implementation of a simple Integer Calculator. Based on the ideas in the book, I made some extensions: 1. Extend From Integer Calculator to decimal calculator. 2. Division is supported. 3. Empty characters are suppo

Calculator application written in pure HTML + CSS + JavaScript A pen exam I accidentally saw a company's pen question. The question is as follows: Use HTML5, CSS3, and JavaScript to create a webpage, such as a form Calculator The key is composed of appName + id. The id increases automatically and is unique. You can delete a record by id and appName. If you enter *, all records are deleted. Package apps Af