Invalid expression. Need help fixing my function.

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Jacob Smith 2021-2-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/757609-invalid-expression-need-help-fixing-my-function

评论： Jacob Smith 2021-2-27

I am new to all of this and cant figure out what it is I am doing wrong. I've been at this for sometime now and I've looked at a lot of reference material and still I have nothing working for me. What error have I made and how can it be fixed? I'm going braindead over here, please and thank you! I've underlined the current trouble spot.

function grade = lettergrade(score)

if score < 0 "OR" score > 100

grade = 'incorrect input';

elseif score <= 90 && score <= 100

grade = 'A';

elseif score >= 80 && score <= 90

grade = 'B';

elseif score >= 70 && score < 80

grade = 'C';

elseif score >= 60 && score < 70

grade = 'D';

elseif score < 60

grade = 'F';

end

Error: File: lettergrade.m Line: 2 Column: 19

Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To construct matrices, use brackets instead of

parentheses.