switch ... case (or if ... elseif ...) statements are simple to understand and are great for beginners, but are very limited. To do what you want with a switch you'd have to split each of your case statement into 4, so you'd have
switch var
case 'ABC'
Str = 'A'; pos = 1;
case 'ADE'
Str = 'A'; pos = 2;
...etc
A much simpler way to do what you want is not to use switch at all, and just use look-up tables:
lookuptable = {{'ABC' 'ADE' 'AFG' 'AHI'}, 'A';
{'BAC' 'BDE' 'BFG' 'BHI'}, 'B'};
for row = 1:size(lookuptable, 1)
[found, pos] = ismember(var, lookuptable{row, 1});
if found
Str = lookuptable{row, 2};
break;
end
end
if found
fprintf('"%s" found, Str is "%s" and pos is %d\n', var, Str, pos);
else
fprintf('"%s" not found\n', var);
end
