Result = Math.Pow(firstNumber, secondNumber) Ĭonsole.WriteLine("\nResult of " firstNumber " " stringOperation " " secondNumber " = " result ".") įirst of all you are not verifying the input of your program. Do someting depending on the operation choose If (stringOperation = " " || stringOperation = "addition")Įlse if (stringOperation = "-" || stringOperation = "soustraction")Įlse if (stringOperation = "*" || stringOperation = "multiplication")Įlse if (stringOperation = "/" || stringOperation = "division")Įlse if (stringOperation = "^" || stringOperation = "exposant")Įlse if (stringOperation = "%" || stringOperation = "reste") String stringOperation = Console.ReadLine() String stringSecondNumber = Console.ReadLine() ĭouble secondNumber = Convert.ToDouble(stringSecondNumber) Ĭonsole.WriteLine("Enter the operation (addition), - (soustraction), * (multiplication), / (division), ^ (exposant) or % (reste) :") String stringFirstNumber = Console.ReadLine() ĭouble firstNumber = Convert.ToDouble(stringFirstNumber) Ĭonsole.WriteLine("Type you second number :") What do you think of my first program? Is it well-formatted and well-written? using System Ĭonsole.WriteLine("Type you first number :") ’*’ for multiplication, ’/’ for division, and ’%’ for remainder. Allow the user to type in ’ ’ for addition, ’-’ for subtraction, Use a switch statement to handle the different operations in different Going to ask the user to type in two numbers and then type in a math The program that we’ll make is going to be a simple calculator. In one of the chapters, he asks us to make a (really) simple calculator as a console application using the switch statement: I then plan to make video games with Unity 3D after. Perform so the calculator must handle this properly.I'm reading this very good book, C# Player's Guide, to learn C#. It’s quite common to change one’s mind about the type of operation one wants to When two or more operators are entered consecutively Giving 86 as the result which is also set as the firstOperand for the nextģ. Second operand and hit the = key, the calculate function is executed again Operation ( 5 * 20) whose result ( 100) is subsequently set as theįirstOperand for the next calculation so by the time we enter 14 as the This is because hitting the minus key triggers the calculation of the first So 5 * 20 - 14 = should give 86 as the result. Enter 12 10 = in the calculator and notice that the correct Also, the value of firstOperand is updated to the result so that it This result is subsequently displayed to the user by updating the displayValue The result is saved in the result variable. If so, the calculate function is invoked and The else if block added to handleOperator checks if the operator property An example of a valid expression is shown below:Ĭonst calculator = (addition, subtraction, multiplication and division) on our calculator app byĬonstructing a valid expression using the input buttons, and have the resultĭisplayed on the screen. Getting startedĪnyone should be able to perform the four most common arithmetic operations Feel free to do this tutorial on other online code playgrounds Start by forking the code to a new fiddle, and follow along by typing each step The calculator layout was crafted, but I made a few minor changes so make sure It contains all the necessary markup and styles Before you beginįor this tutorial on JSFiddle. You have no prior experience with building applications in the browser. To break down each step as best as I can so it should be easy to follow even if This tutorial assumes that you have a basic knowledge of JavaScript. You can play around with it to get a feel of what you’ll be building On the JavaScript logic employed to make the calculator work. If you’d like to learn how it was achieved, be sure to check out this More or less in the manner of those calculators found at grocery stores. The calculator app we’ll develop in this tutorial is a very simple one. 8 How to create your first Chrome extension.7 How to build a Pomodoro Timer App with JavaScript.6 How to build a Simon Game with JavaScript.5 How to build a Custom HTML5 Video Player with JavaScript.4 How to build a Todo List App with JavaScript.3 How to build a Calculator App with JavaScript.2 How to build a Wikipedia Search App with JavaScript.1 Build your first JavaScript App - A Random Quote Generator.JavaScript projects for beginners (8 part This epic tutorial provides a solid workout for JavaScript newbies by describing how a simple calculator application can be developed with the language. Updated on JanuHow to build a Calculator App with JavaScript
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