if else if statement problem

Question

Sally Sakr 2023-5-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1962219-if-else-if-statement-problem

移动：Atsushi Ueno 2023-5-12

Please help me if you can. I wrote this but the answer still gives me the final condition only "not identified". What is the mistake ?

for PAs = 9
    DAs = 8;
    As = 131;
    Bs = 3;
    if PAs==0
        DAs==0;
        As==0;
        Bs==0;
        disp('specimen is sound')
    elseif PAs==0:10
        DAs==0:10;
        As<100;
        Bs<2;
        disp('cap undercut')
    else
        disp('not identified')
    end
end
not identified

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Answer 1

Cris LaPierre 2023-5-12

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1962219-if-else-if-statement-problem#answer_1233804

在 MATLAB Online 中打开

The following conditional is seen as 'false' by the elseif statement.

elseif PAs==0:10

This will check PAs against every number in 0:10. It will only evaluate true (and execute the corresponding statement) if all conditions evalue 'true'

PAs=9;
PAs==0:10
ans = 1×11 logical array
   0   0   0   0   0   0   0   0   0   1   0

If you want the elseif statement to execute if any of the comparisons is true, use any

any(PAs==0:10)
ans = logical
   1

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Atsushi Ueno 2023-5-12

移动：Atsushi Ueno 2023-5-12

在 MATLAB Online 中打开

PAs = 9;
PAs == 0:10
ans = 1×11 logical array
   0   0   0   0   0   0   0   0   0   1   0
if PAs == 0:10
    disp('identified')
else
    disp('not identified')
end
not identified
if any(PAs == 0:10)
    disp('identified')
else
    disp('not identified')
end
identified