Grading the students performance.

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RITTIK KUMAR GHOSH 2014-11-13

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评论： RITTIK KUMAR GHOSH 2014-11-15

Given the correct key in the form of an array correct_key='.........'; write a program to evaluate the grade of a student from the answer key. use -1 if answer is wrong, 10 if answer is correct and 0 if no answer.

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RITTIK KUMAR GHOSH 2014-11-13

being more specific, there were total of 8 questions carrying 10 marks for a correct answer and -1 for wrong answer and 0 for an unattended question. how to evaluate it?

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MA 2014-11-13

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在 MATLAB Online 中打开

%w=wrong
%c=correct
%o=unanswered
syms w c o
s=0;
for i=1:5
    g(i)=input('answer=  ');
    if g(i)==w
        s=s-1;
    elseif g(i)==c
        s=s+10;
    elseif g(i)==o
        s=s+0;
    end
end
display('grade')
display(s)

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RITTIK KUMAR GHOSH 2014-11-14

thanks

MA 2014-11-14

you're welcome

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RITTIK KUMAR GHOSH 2014-11-14

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https://ww2.mathworks.cn/matlabcentral/answers/162574-grading-the-students-performance#answer_158989

1.When I am putting in the answers as 10 0 -1 10 10, the grade remains the same in each case, it is not changing and showing the result 0. why is it so? 2.Why there are 2 spaces in this script('answer= ') can you please explain?