How can I incoporate logics of and/or in switch case problem

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Eng. Fredius Magige
回答： Walter Roberson 2017-8-28
How can I use/incorporate and adoption of logic (and/or) combination in switch case problem. Any assistance is appreciated too
  2 个评论
Jan
Jan 2017-8-28
The question is too general for a meaningful answer. What does "incorporate and adoption of logic" mean? Something like:
switch (a || b) && c
case 0, ...
case 1, ...
end
?
KALYAN ACHARJYA
KALYAN ACHARJYA 2017-8-28
More clarification needed for exact answer.
o_p=A && B;
o_p=1 or 0;
switch(o_p==1)
statement;
switch(o_p==0)

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回答（1 个）

Walter Roberson
Walter Roberson 2017-8-28
You can do "or" by providing a cell array of all of the matches
switch mod(x, 4)
case {0, 3}
disp('first')
case {1, 2}
disp('second')
otherwise
disp('non-integer')
end
You can get more complicated by matching on arrays or cell arrays:
switch [mod(x,2), y+2] %not recommended
case [0, 7]
disp('first')
case [0, 8]
disp('second')
case [1, 7]
disp('third')
case [1, 8]
disp('fourth')
end
switch {mod(x,2), S} %not recommended
case {0, 'low'}
disp('first')
case {0, 'hi'}
disp('second')
case {1, 'low'}
disp('third')
case {2, 'hi'}
disp('fourth')
end
Doing "or" is more complicated:
switch true %blech!
case x == 0 || strcmp(S, 'low')
disp('first')
case x == 1 || strcmp(S, 'hi')
disp('second')
otherwise
disp('third')
end

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