I tried everything. But I still need to learn a lot. inputkeyboard is a global String I enter a value on a 4x4 membrane keyboard I decided to define the value as a sum of the day, month and year collected from the object created by the RTC (which does not appear in the code below) The result is …

Start by posting a complete sketch that illustrates your problem

[image] Whandall: toInt() = Dear, very grateful. I got to test several things, just missing this toInt() It worked out.

If you saved the digits to an int as they were read from the keypad then you would not need to convert the 4 digit value

If you use Strings, you can use all their functions. String() - Arduino Reference The Arduino programming language Reference, organized into Functions, Variable and Constant, and Structure keywords.

Colleagues, I have a String keypad = 123456789; And I need to get intermediate numbers, for example, 567 or 345, or 78...etc What I achieved was getting only final numbers using this function: keypad.substring(keypad.length() - 2, keypad.length()).toInt(); out = 89 How do I get intermediate nu…

Will the numbers that you want to isolate always be in the same place in the string and of the same length ? Have you got any control over the format of the data that is being sent ?

Yes, they will always be in the same place. These are numbers that I'm going to type on a 4x3 keyboard and I only need to get the 3rd and 4th or 4th. the 5th and the 6th. etc.

My first piece of advice would be to use C style strings rather than Strings As they are of fixed length and place you can read each number string as it arrives and convert it to an int If you really want to use Strings then you just need to use substring correctly to pick out the elements of the …

Thank you very much. And, by chance, can you help me on this topic ? [image] RTC DS1302 with NTP and ESP32 almost working Programming I already changed the order day, month, year. did not solve

Int to String in a very simple and easy way

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Whandall December 28, 2022, 5:57pm 3

How about

          if (inputkeyboard.toInt() == calculodata ) {

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Int to String in a very simple and easy way

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