Simple elseif statement

[groogg]

I want to write a simple if-else statement in the Formula node in Labview.

I want to write

if (condition)
execute
else if (condition)
execute
else
execute
end
end

but the "else if" generates error in statement. Is this way of writing not allowed? Can I do it in another way?

I want to avoid using a case structure since I already have 5 cases in one case structure and this if statement is just going to be in one of these.
/grogg

[Joe_H]

Here is the syntax that I found in the help on if statements. Try looking at the help. Sorry i could not help more

if-statement:

if ( assignment ) statement

if-else-statement:

if-statement else statement

[Will.D]

I thought that code in those nodes was based on C...  If my memory serves me correctly, an else if statement is C is "elsif" not "else if"

[groogg]

I have look in the help. I'm sorry but it makes no sense writing

if statement else statement

did they forget to write (assignment). I thought it would be

if (assignment) else (assignment) statement

The help file does not say anything about the syntax for else if but I didn't think it would be a problem. Wrinting one if-statement inside another shouldn't be any diffrent then writing a while loop inside another while loop.

[groogg]

---

@Novatron wrote:
I thought that code in those nodes was based on C...  If my memory serves me correctly, an else if statement is C is "elsif" not "else if"

---

I also thought it was base on C. I have tried elseiff too.

[Will.D]

Oops, I think I lied...  I was thinking of Perl...  (too many languages!!)

[tbob]

Forgive me for sounding arrogant or foolish, but don't we use Labview to get away from text coding?  Why even bother with if-else statements in a formula node?  Why not do the whole construct in Labview graphically?  I have never used a formula node and I don't expect to ever use one.  All formulas can be created with Labview numerical functions.  I guess I could see constructing a complex formula of math functions (X=2a^2+4b+c-d) using a formula node, but why would anyone want to use a formula node to perform text based coding like if-else and such?  Use Labview graphics and your troubles are over.

[groogg]

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@tbob wrote:

Forgive me for sounding arrogant or foolish, but don't we use Labview to get away from text coding?  Why even bother with if-else statements in a formula node?  Why not do the whole construct in Labview graphically?  I have never used a formula node and I don't expect to ever use one.  All formulas can be created with Labview numerical functions.  I guess I could see constructing a complex formula of math functions (X=2a^2+4b+c-d) using a formula node, but why would anyone want to use a formula node to perform text based coding like if-else and such?  Use Labview graphics and your troubles are over.

---

That answer was as helpful as when people ask for help with windows and the reply is use Linux. Sorry if I sounded arrogant.

[groogg]

The answer is very simple. The code should be:

if (condition) {

    statement

    }else{ if (condition){

                  statement

               }else{

                        statement

               }

    }

[tbob]

I was just wondering why anyone would use a formula node for if-else.  But if that is your preference, so be it.  I have tried this bit of code in a formula node and it works fine:  (a is the input, x is the output)

if(a==0)
  {
     x=1;
     y=11;
  }
else if(a==1)
  {
      x=2;
      y=12;
  }
else if(a==2)
  {
      x=3;
      y=13;
  }
else
  {
      x=-1;
      y=-1;
  }

I also tried an exact copy of your construct:

if(a==0) {
     x=1;
     y=11;
     } else {if(a==1) {
                    x=2;
                    y=12;
                    } else {
                           x=-1;
                           y=-1;
                           }
                     }
 It worked fine.