# Array Elements and Equality Checks

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Joseph Percsy on 5 Apr 2013
Another really easy question from me, currently I have this code:
ADL = [52.0, 109.0, 55.8, 61.6, 18.4, 42.2, 18.2, 9.2, 5.6, 19.0, 49.6, 56.8];
PER = [131.4, 145.4, 129.0, 93.2, 4.0, 32.4, 0.0, 0.0, 0.0, 43.2, 23.2, 88.6];
Total = 0;
for i=12
if ADL(i) > PER(i)
disp('There was greater rainfall in Adelaide.')
elseif ADL(i) < PER(i)
disp('There was greater rainfall in Perth.')
elseif ADL(i) == PER(i)
disp('There was the same amount of rainfall in both cities.')
end
end
Yet it really doesn't like me doing it this way, how do I achieve the results I want in MATLAB?

Walter Roberson on 5 Apr 2013
You did not indicate what results you want.
Image Analyst on 5 Apr 2013
Joseph Percsy on 5 Apr 2013
My apologies, at the moment I want it to produce one of the three statements for each individual array element, as opposed to the two arrays as a whole (which it is currently doing).

Image Analyst on 5 Apr 2013
If you run this:
ADL = [52.0, 109.0, 55.8, 61.6, 18.4, 42.2, 18.2, 9.2, 5.6, 19.0, 49.6, 56.8];
PER = [131.4, 145.4, 129.0, 93.2, 4.0, 32.4, 0.0, 0.0, 0.0, 43.2, 23.2, 88.6];
for k = 1 : length(PER)
fprintf('For year #%2d, ', k);
if ADL(k) > PER(k)
fprintf('there was greater rainfall in Adelaide (%.1f) than in Perth (%.1f).\n',...
elseif PER(k) > ADL(k)
fprintf('there was greater rainfall in Perth (%.1f) than in Adelaide (%.1f).\n',...
else
% Equal rainfall, but may never be totally equal due to FAQ.
fprintf('there was equal rainfall in Perth (%.1f) and Adelaide (%.1f).\n',...
end
end
is this what you expect?
For year # 1, there was greater rainfall in Perth (131.4) than in Adelaide (52.0).
For year # 2, there was greater rainfall in Perth (145.4) than in Adelaide (109.0).
For year # 3, there was greater rainfall in Perth (129.0) than in Adelaide (55.8).
For year # 4, there was greater rainfall in Perth (93.2) than in Adelaide (61.6).
For year # 5, there was greater rainfall in Adelaide (18.4) than in Perth (4.0).
For year # 6, there was greater rainfall in Adelaide (42.2) than in Perth (32.4).
For year # 7, there was greater rainfall in Adelaide (18.2) than in Perth (0.0).
For year # 8, there was greater rainfall in Adelaide (9.2) than in Perth (0.0).
For year # 9, there was greater rainfall in Adelaide (5.6) than in Perth (0.0).
For year #10, there was greater rainfall in Perth (43.2) than in Adelaide (19.0).
For year #11, there was greater rainfall in Adelaide (49.6) than in Perth (23.2).
For year #12, there was greater rainfall in Perth (88.6) than in Adelaide (56.8).

#### 1 Comment

Joseph Percsy on 5 Apr 2013
That's exactly what I was looking for, thanks Image Analyst!