dividing expressions calculator

Python-Regular Expressions implement the calculator function and python-Regular Expressions Requirements: The user enters an operation expression and the terminal displays the calculation result. Code: 1 #! /Usr/bin/env/python3 2 #-*-coding: UTF-8-*-3 4 "the user inputs the computation expression, show the calculation result "5 6 _ author _ = 'jack' 7 8 import re

Python Regular Expressions implement the calculator function, python Regular Expressions Requirements: The user enters an operation expression and the terminal displays the calculation result. Code: #! /Usr/bin/env/python3 #-*-coding: UTF-8-*-"the user inputs the computation expression, show the calculation result "" _ author _ = 'jack' import rebracket = re. com

Using regular expressions1, realize subtraction and extension number priority analysis2, the user input 1-2 * ((60-30 + ( -40/5) * (9-2*5/3 + 7/3*99/4*2998 +10 * 568/14))-( -4*3)/(16-3*2)) and other similar formulas, you must parse the inside (), +,-, *, /symbols and formulas (cannot invoke lazy implementations such as eval, etc.), the result of the operation, the result must be consistent with the results of the actual calculator.This is calculated using regular

Outline of this section Iterators Generators Decorative Device Basic Decorator Multi-parameter Adorner Recursive Algorithm Basics: Binary lookup, two-dimensional array conversion Regular expressions Common Module Learning Jobs: Calculator Development Implementation of subtraction and extension priority resolution User Input 1-2 * ((60

parenthesis) return parentheses (string) #最后继续匹配括号, knowing that all brackets are taken out and the results taken out.3. Wait until the function is complete to debug the calling function and the expression that evaluates the formulaStat_print = Print ("calculator version 3.0 \ n Input ' q ' exit program") while True: formula_computing = input ("Enter calculation form

I. Using Msscriptcontrol to execute JavaScript code in C # JavaScript There is an eval method used by people who know his convenience and strength.In C #, we can also execute a piece of JavaScript code through a COM component.The following code shows how to execute a mathematical expression with the Msscriptcontrol component:Msscriptcontrol.scriptcontrolclass sc = new Msscriptcontrol.scriptcontrolclass (); SC. Language = "JavaScript"; object obj = sc. Eval ("500-(110-100)/2*6"); Console.WriteLin