Re: HELP! Trouble using && operator with 3 conditi

you know this, single equal sign (=) used assignment, while double equal signs (==) used comparison.

long story . . .

in following code snippet, you're using assignment, should using comparison:

code: [select]

if(val >= pad0thresh && toggleaval = low && togglebval = low)

read "if val greater or equal pad0thresh , toggleaval assigned value low , togglebval assigned value low . . .".

this should read "if val greater or equal pad0thresh , toggleaval equal value low , togglebval equal value low . . .", written:

code: [select]

if( val >= pad0thresh && toggleaval == low && togglebval == low)

common mistake

(the value/variable on left of operator lvalue, while value/variable on right of operator rvalue)

code: [select]

lvalue = rvalue;
if( lvalue == rvalue )

thanks, johntron. would've missed = vs. == bit.

i figured out 3-condition boolean. needed more parentheses. (specifically, each term/condition needs enclosed own set , boolean argument enclosed in set.) nonfunctional lines like:
else if(val >= pad5thresh && toggleaval = high && togglebval = high)
...whereas fixed them , read (and compile properly) as:
else if((val >= pad5thresh) && (toggleaval == high) && (togglebval == high))

notice updated equals arguments. takes care of problem, compiler has gotten thru loop stage without issue, reaches midi/serial stage , has problem, i'll start new thread that.

cheers,

jake

Arduino Forum > Forum 2005-2010 (read only) > Software > Syntax & Programs > Re: HELP! Trouble using && operator with 3 conditi

arduino