calculator

Does anyone know how to calculate a Mod b in Casio fx-991ES Calculator. Thanks This calculator does not have any modulo function. However there is quite simple way how to compute modulo using display mode ab/c (instead of traditional d/c ). How to switch display mode to ab/c : Go to settings ( Shift + Mode ). Press arrow down (to view more settings). Select ab/c (number 1). Now do your calculation (in comp mode), like 50 / 3 and you will see 16 2/3 , thus, mod is 2 . Or try 54 / 7 which is 7 5/7 (mod is 5 ). If you don't see any fraction then the mod is 0 like 50 / 5 = 10 (mod is 0 ). The

I am currently using this Python code: valid_chars = "0123456789-+/* \n"; while True: x = "x=" y = input(" >> ") x += y if False in [c in valid_chars for c in y]: print("WARNING: Invalid Equation"); continue; if(y == "end"): break exec(x) print(x) It crashes when the user does something like this: 9/0. Error: ZeroDivisionError: division by zero What are some ways that will prevent the user from dividing something by zero? You can except the ZeroDivisionError like this x = "1/0" try: exec(x) except ZeroDivisionError: print ("WARNING: Invalid Equation") If you are using Python 2.x, the input

i created a basic calculator, but with division i coded it, that when i divide by zero it will give the error to the user in the 2nd textbox, but now even if i divide by 3 or any other number that is not 0, the error keeps appearing in my second textbox. namespace calc { /// <summary> /// An empty page that can be used on its own or navigated to within a Frame. /// </summary> public sealed partial class MainPage : Page { Double num01 = 0; int Operation = 0; public MainPage() { this.InitializeComponent(); } private void num0_Click(object sender, RoutedEventArgs e) { textbox1.Text = textbox1

I am learning Android so I want to keep things simple. I have to add two numbers and display the result in a single editbox. To add with the second number you have store the first number in a variable. Then later add using this variable with the second number in the edit text. If you look at the xml and Java Code below you will have a better idea. Thanks in advance. <?xml version="1.0" encoding="utf-8" ?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <RelativeLayout

I am trying to calculate price for number of days from 1-21 based on date. HomeController $Sql = ' SELECT DISTINCT a.property_id, a.date, a.minimum_stay, a.maximum_stay,a.quantity, a.arrival_allowed,a.departure_allowed, p.duration, p.persons, p.amount, p.extra_person_price, p.minimum_stay AS price_minimum_stay, p.maximum_stay AS price_maximum_stay, p.weekdays, p.period_till, p.period_from, datediff(p.period_till, p.period_from) AS number_of_days FROM availabilities AS a JOIN prices AS p ON a.property_id=p.property_id WHERE a.minimum_stay >0 AND a.maximum_stay < 22 AND a.date >= p.period_from

How to add a decimal button so I don't have to do whole numbers? If i wanted any decimal number like 1.2 or 100.4 or 3.0 or anything like that, how would I add it to the calculator I'm making? You're not giving me much information in your question. How do the other buttons work? If I was making a calculator I would have a label at the top showing the current reading. On press of a number button I would update the label with the number at the end. For a decimal button you just add a . to the end of the label. You might want to have a global variable BOOL hasDecimalPlace and set it to true so

I need to make a simple calculator (with infix operator) parser that handle the operators +,-,*,/ and float and variable. To make this I used javacc, and I have made this grammar with jjtree. It works but it doesn't ensure that the final tree will be a binary tree, which I need. I want something like 5*3+x-y to generate the following tree : * / \ 5 + / \ 3 - / \ x y What would be a proper grammar to do that, that would not be left-recursive ? Something like the following will give you the tree you asked for. void sum(): {} { term() [ plus() sum() | minus() sum() | times() sum() | divide() sum(

I am basically making a Java program that will have to run a lot of calculations pretty quickly(each frame, aiming for at least 30 f/s). These will mostly be trigonometric and power functions. The question I'm asking is: Which is faster: using the already-supplied-by-Java Math functions? Or writing my own functions to run? The built-in Math functions will be extremely difficult to beat, given that most of them have special JVM magic that makes them use hardware intrinsics. You could conceivably beat some of them by trading away accuracy with a lot of work, but you're very unlikely to beat the