Help me out finding errors

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Raed Noor 2019-11-11

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https://ww2.mathworks.cn/matlabcentral/answers/490535-help-me-out-finding-errors

关闭： MATLAB Answer Bot 2021-8-20

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Hey there

I have a homework to calculate the total grade on some quizzes. I know there are some error, could you please help me out finding and fixing them??

A = cell(20,7);
i = 1;
x = input ('Enter the student''s name ( or to termate ):','s');
while(~strcmp(x,'0'))
    A{i,1} = x;
    A{i,2} = input('Enter the grade for the exam 1 ( out of 20) ');
    A{i,3} = input('Enter the grade for the exam 2 ( out of 20) ');
    A{i,4} = input('Enter the grade for the exam 3 ( out of 20) ');
    A{i,5} = input('Enter the grade for the exam 4 ( out of 20) ');
    A{i,6} = A{i,2};
    for j = 2:5
        A{i,6} = A{i,6} + A{i,j};
    end
    z = floor(A{i,6}/10);
    if (z < 6)
        A{i,7} = 'F';
    elseif (z < 7)
        A{i,7} = 'D';
    elseif (z < 8)
        A{i,7} = 'C';
    elseif (z < 9)
        A{i,7} = 'B';
    else (z < 9)
        A{i,7} = 'A';
    end
    x = input ('Enter the student''s name ( or to termate ):','s');
    i = i+1
end

I’m receiving this error!

Enter the grade for the exam 1 ( out of 20) Attempt to execute SCRIPT test as a function: /MATLAB Drive/test.m

Error in HM11 (line 8) A{i,2} = input('Enter the grade for the exam 1 ( out of 20) ');

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Walter Roberson 2019-11-12

编辑：Walter Roberson 2019-11-12

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What about the fprintf() ? Your question does not mention fprintf()

fprintf('Student name: "%s", grade: "%s"\n', A{i,1}, A{i,7});

By the way, your code is very trusting that none of the responses will be nan or infinite, and that no-one will have a perfect score...And have a close close look at what you are comparing each value to.

Raed Noor 2019-11-12