Can i know which of the statements were true in an if statement with OR inside of it?

Projects Programming
1

In the case below, can i know or use the information of wich statement was true?

if(number == 1 || number == 2){
/*other code*/
}
2

Sure. Test each individually before the compound test.

3

Thank you, but im working on a bigger project and i am worried of my UNO's program storage space. I would like to shorten my code. do i have any other options?

4

Both conditions could be true and you would never know from your logic.

1 Like
5

You can comment or remove the test code after you get satisfactory results of the test(s).

Serial prints are the best debugging tool that you have with the Arduino IDE.

6

Your math seems to work differently from mine. Where I come from, an integer can only be either "==1" or "==2", not both at once...

7

Thank you for the answers, but just to be clear.

if(y[x] == z || y[x+1] == z){
          y[/*i cant code it to write here x or x+1 depending on which was true*/]--;          
        }
8

It depends. If both are equal to z do you want to decrement both? If so then you will need to do this:

if(y[x] == z)
{
   y[x]--;          
}
if(y[x-1] == z)
{
   y[x-1]--;          
}

There might be a more elegant solution but without knowing your application or the rest of your code I can't say.

9

Sure, but the logic is faulty is the actual value is important.

10 
if (number == 1 || number == 2) {
  Serial.println(number);  // print the number 
  if (number == 1) {
    // do something
  } else {
    //number = 2, do something else
  }
}

Might want to change your logic if the number is a float.

11

If you describe your project in detail more suggestions can be made
Without more information everything is just guessing.

If you use a lot of text-out to a display all constant textes can be put into flash by using the F-macro.

Though I don't know if you do a lot of text-output I can't really say.

depending on your budget you could buy a different microcontroller with more flash and RAM-memory. An Arduino Mega

if you need just a smaller number of IO-pins or using an I2C-Io-expander is sufficient you could use a $8 cheap Seeeduino XIAO which has 16 times more RAM than an arduino Uno
though I don't know the details I can't say

If you plan to have internet-connectivity using an $10 ESP32 will deliver internet-connectivity combined with plenty of RAM
though I don't know the details I can't say

etc. etc. etc. etc

best regards Stefan

12

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