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I have a task in my school extraculicular. my task is to create a calculator that can run with 1 input. example,
input:
3+7+1*2
and the output will be
12
like that, how to create that? i have search in google to create calculator but all of them show basic tutorial like "Input first number:" "Input second number" "What operator u want" "Result"
Thank's before.
My english is not well.
That is very easy in Free Pascal:
uses symbolic;
var s : string;
begin
s:='3+7+1*2';
//readln(s)
writeln(round(quickevaluate(s,[],[])));
end.
prints
12
You can read the input expression from the user with readln(s) instead of the fixed expression.
The round is because the evaluation returns a single, for more details see the sources of unit symbolic.
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add=+
echo "$((1{$add}2))"
If I write 1+2 it outputs 3, but when I store the + sign in a variable called "add" and then use it in place of + operator, it just outputs it as if it was a string. How can I use the variable and still make it output 3?
As far as I can see, the code is wrong and should not print anything but an error.
What you should do is write the variable as ${add}, not {$add}.
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I want to define a new variable called : character , with type of character
How can i do that without errors? (despite they have the same name)
I tried this on paper : variable character: character, but i am not sure if its correct or not
Thanks.
It depends on your programming language. Like in java you use-
char character = 'A';
And in c-
char character;
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東京都building千代田区丸の内１building２floor１number
to
東京都千代田区丸の内１-２-１
PS: Digits are double bytes.I have a string,that contains address. How to convert that address like above.
Answering the question that probably should have been asked (given the clarifications in comments):
address.gsub(/([０-９]+)(?:丁目|番地?|号)(?=[０-９]|$)/, '\1-').sub(/-$/, '')
This will process any sequences of "number+location" (with "location" being lot, block, (house) number...) that is either followed by another number, or is at the end of the string, replacing the location with a dash; then removing the final dash, if there is one.
Note that this will not pick up on Japanese numbers: if you get an address like 東京都千代田区丸の内一丁目２番１号, it makes no sense to transform it to 東京都千代田区丸の内一-2-1, and converting Japanese numbers into Arabic ones is trivial up to 9 and then a bit less trivial.
string.gsub(/(?<=[０-９])(?:丁目|番地?|号)\b/, "-").sub(/\z/, "")
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I want to verify the numbers after a given decimal. Values above 10 should be considered as invalid. I would need a regex command to verify. For example:
Input: Expected response
0.005: valid
1.003: not valid
1.04: valid
I tried the following regex, but it doesn't give me the expected result.
/\d{0,1}\d{0,3}/
If I understand your question correctly
^(0\.\d{3}|[1-9]\.\d{2}|10\.00)$
online test
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I want to be able to input a number and choose a variable then what the variable is set to then its subtracted by the number inputed and displayed in a TextBox when i click the calculate button (I'm trying to create a rank calculator for a game).
[Current cR is TextBox1, Choosen Rank is ComboBox1 and Calculate is Button1]
The Template
http://imgur.com/ofre43a
It will look something like this if I understand your equation correctly.
private1-textbox1.value/agxp = rgr
I think that is essentially what you are asking. I am assuming you will have assigned a value to private1 previously and that the ccr is inputed by the user. I also am assuming that your agxp is also previously assigned. There is the possibility that the value in textbox1 will be read as a string not as an integer. If that is the case, you will have to convert it to an integer.