Here is what I'm trying to do -

Create a calculator program that allows the user to input their operator (+,-,/,*,**,%) and two numbers, and it prints their result. At the end, they get to input 0 to begin at the start again, or 1 to end.

I can't get it to loop, and when I've tried to get it to loop, it does an infinite loop, and I have to control C to get out of it.

I've pm'd a few people, and they've been helpful, but I want to post this code and just have someone tell me how much of a dumbass I am. I'm in week 3 of my freshman year, and I have no prior experience, so this is all just frustrating for me right now

create posts, not pms. that way people dont keep repeating themselves, and more people are available to help.

first problem is this line:

when checking for equality, always use ==

the main issue is you have to think about the loop. it should follow this kind of pattern:



everything you want to repeat should be inside the loop. you really want to do a "do-while" loop, but i dont think python has it, so this is a pattern to simulate it. essentially we force the loop to execute once by making the condition true at the beginning.

This post was edited by carteblanche on Oct 18 2015 05:53pm

unless it is VB.NET

= Assigns
== Compares

You have my PM, but post #2 is the same

This post was edited by ArtofApocalypse on Oct 18 2015 09:58pm

yes is expecting an int based on int(intput()), but your code suggests comparison to a str.

On your while loop you're missing the colon at the end of the first line.

Also, as others pointed out = is for referencing variables, == is for Boolean comparison.

This post was edited by j0ltk0la on Oct 19 2015 11:32am

You need to emulate a do while loop using a Boolean variable. You should avoid using breaks unless you are in switch selection statement. It works but its sloppy.

A Boolean variable is a variable that only hold two values, true or false.

This is not formatted right but,

Boolean condition;

While (condition)
{
Your code
Condition = test_condition ();
}

You will nest your entire program in the while loop and test condition will return a true to continue or a false to exit.


This post was edited by ROM on Oct 20 2015 05:46am

Python doesn't have do while technically and it doesn't have case-switch either, but logically things should work out okay.

With the way Python and most languages should work, 0 will come back is false, so you can reference anything to 0 and check with bool() to see if False.



I'm not sure how far you are with Python, if you're allowed to use functions or not, but generally things start to make more sense with the introduction of those.

Since I believe that you're wanting to have your whole program looping, having your code separated into a function or functions and setting these up in the loop while probably give you what you need.

Bad advice on naming it continue, it's a reserved term, but same idea.