%-------------------------------------%
% Lab Exercise 4: IF                  %
% Date: 9/24/2002                     %
%                                     %
% Gun Srijuntongsiri                  %
% gs61                                %
% ??????                              %
%-------------------------------------%

clear

% Task 2: test sign
v = input('Enter a number : ');
if v > 0
    disp('It is positive.');
elseif v==0
    disp('It is zero.');
else
    disp('It is negative.');
end

% Task 3: average, max, and min
v1 = input('Enter a number : ');
v2 = input('Enter a second number : ');
v3 = input('Enter a third number : ');
Average = (v1+v2+v3)/3  % average

% To find max 
if v1 >= v2 & v1 >= v3
    max = v1
elseif v2 >= v1 & v2 >= v3
    max = v2
else
    max = v3
end

% Alternatively,
clear max
max = max([v1,v2,v3])

% To find min
if v1 <= v2 & v1 <= v3
    min = v1
elseif v2 <= v1 & v2 <= v3
    min = v2
else
    min = v3
end

% Alternatively,
clear min
min = min([v1,v2,v3])

% Task 4: 
%   odd/even
v = input('Enter a number : ');
if mod(v,2)
    disp('It is odd');
else
    disp('It is even');
end

%  between 3 and 7
if v >= 3 & v <= 7
    disp('It is between 3 and 7');
else
    disp('It is not between 3 and 7');
end

% is either 5 or 10
if v == 5 | v == 10
    disp('Yes');
else
    disp('No');
end

% divisible
v1 = input('Enter the first number : ');
v2 = input('Enter the second number : ');
if mod(v1,v2)==0
    disp('divisible');
else
    disp('not divisible');
end