Invalid expression. Need help fixing my function.
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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.
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