rounding given matrix towards zero and even number??

Im given a row matrix which contain negative and decimals values. Im asked to round those negative values into zero and those positive with decimals values to even number using for loops and if statement. how can i accomplish this

Answer 1

[Image Analyst]

Here's a start:

a = 10 * rand(1,15)-5
for k = 1 : length(a)
  if a(k) < 0
    a(k) = 0;  % Set negative numbers to 0
  else
    % Round to nearest multiple of 2
  end
end

Since it sounds like homework, I'll let you do the part on rounding to the nearest multiple of 2.

[Victor Seaw]

Yes it is homework I don't have Matlab v me so can I type out the code here and hopefully u can tell me whether its an error or will it run. Else.. a=2*round(a/2)..?? Will this work in a if and for case

[Image Analyst]

Here's some results with your formula:

a =
  Columns 1 through 11
       -3.947      -2.9348      -1.9222      -0.9382     0.050209       1.0485        2.011       3.0917       4.0433       5.0427       6.0029
  Columns 12 through 17
        7.051       8.0964       9.0275       10.074       11.012       12.077
a =
     0     0     0     0     0     2     2     4     4     6     6     8     8    10    10    12    12