Editing SuperBASIC (section)

===== IF, THEN, ELSE =====

====== Source of this tip: Ernesto ======
* A regular <code>if then</code> condition can't contain an <code>else</code> statement, as in this example: 
<code>10 if a=0 then x=10</code>
* If you need to do an  <code>if then else</code> structure,  you actually have to do an <code>if else endif</code> structure like in the following example,  skipping the <code>then</code> statement. 
<code>10 if a=0<br />
20     x=1<br />
30     else<br />
40     x=2<br />
50 endif</code>
* If you do it in one line it needs to have some colons added, making it look weird like this: 
<code>10 if a=0:x=1:else:x=2:endif</code>
* if you dare to omit the <code>endif</code>  thinking that the <code>if</code> statement won't need it, (mmm.., everything is in one line, so no need, right?) -Nope...all hell breaks loose!- 
<code>10 if a=0:x=1:else:x=2: REM "<-- Error, omited the endif"</code> 
* be careful not to add an extra  <code>then</code> statement by mistake to an <code>if else endif</code> structure, if you do -All hell breaks loose again!!- 
<code>10 if a=0 then  : rem "<-- Error, THEN is not needed!!!" <br />
20     x=1 <br />
30     else <br />
40     x=2 <br />
50 endif</code>

''Debugging hint: If you encounter an error like "open structure" or "endproc without a proc": do not trust the line number that you are given. The root of the problem is probably in a structure earlier on in the code.''