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Full Discussion: Float array sum
Top Forums Shell Programming and Scripting Float array sum Post 302881588 by Akshay Hegde on Monday 30th of December 2013 11:35:35 AM
Old 12-30-2013
Quote:
Originally Posted by berveglieri
Hi everyone,

I'm having some trouble with float array.
When i try to get the array sum with float numbers i get this error line 39: soma + 2.34 | bc: syntax error: invalid arithmetic operator (error token is ".34 | bc")

Code:
 26 Somar() {
 27 echo "Quantos numeros deseja somar?"
 28 read numeros
 29 vetorSoma[$numeros]=" "
 30 for (( i=0;i<$numeros;i++ ))
 31 do
 32 con=$((con+1))
 33 echo -n "digite o $conš numero: "  
 34 read vetorSoma[$i]
 35 done
 36 
 37 for i in ${vetorSoma[@]}; do
 38 sum=0
 39 soma=$((soma + $i | bc))
 40 done
 41 echo "O resultado foi $soma"
 42 }

when i type int numbers it works great, i just don't know why.
Thx.
Your variable soma is not set initially, that will through some error, along with usage of bc as RudiC noticed.

Try :

Code:
Somar() { 
echo "Quantos numeros deseja somar?" 
read numeros 
vetorSoma[$numeros]=" " 
for (( i=0;i<$numeros;i++ )) 
do 
con=$((con+1)) 
echo -n "digite o $conš numero: " 
read vetorSoma[$i] 
done 

soma=0 
for i in ${vetorSoma[@]}; do 
soma=$(echo "scale=2;$soma + $i" | bc -l) 
done 
echo "O resultado foi $soma" 
} 

# call Somar
Somar

 

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CAIRO_CLIP_RECTANGLE_LIST(3)						 1					      CAIRO_CLIP_RECTANGLE_LIST(3)

CairoContext::clipRectangleList - Retrieves the current clip as a list of rectangles

       Object oriented style (method):

SYNOPSIS
public array CairoContext::clipRectangleList (void ) DESCRIPTION
Procedural style: array cairo_clip_rectangle_list (CairoContext $context) Returns a list-type array with the current clip region as a list of rectangles in user coordinates PARAMETERS
o $context - A valid CairoContext object created with CairoContext::__construct or cairo_create(3) RETURN VALUES
An array of user-space represented rectangles for the current clip (The status in the list may be CAIRO_STATUS_CLIP_NOT_REPRESENTABLE to indicate that the clip region cannot be represented as a list of user-space rectangles. The status may have other values to indicate other errors.) EXAMPLES
Example #1 Object oriented style <?php $surface = new CairoImageSurface(CairoFormat::ARGB32, 50, 50); $context = new CairoContext($surface); var_dump($context->clipRectangleList()); ?> The above example will output something similar to: array(1) { [0]=> array(4) { ["x"]=> float(0) ["y"]=> float(0) ["width"]=> float(50) ["height"]=> float(50) } } Example #2 Procedural style <?php $surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 50, 50); $context = cairo_create($surface); var_dump(cairo_clip_rectangle_list($context)); ?> The above example will output something similar to: array(1) { [0]=> array(4) { ["x"]=> float(0) ["y"]=> float(0) ["width"]=> float(50) ["height"]=> float(50) } } SEE ALSO
Classname::Method. PHP Documentation Group CAIRO_CLIP_RECTANGLE_LIST(3)
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