clear;

%定义分数段:满分(),优秀(~),良好(~),及格(~),不及格(<)

A = cell(,);%定义元胞数组

A(,:) = {'Jack','Peter','Rose','Marry','Tom'};

A(,:) = {,,,,};

%根据学生的分数,求出相应的等级

for k = :

    switch floor(A{,k}/)

        case

            r = '满分';

        case

            r = '优秀';

        case

            r = '良好';

        case

            r = '及格';

        case

            r = '及格';

        otherwise

            r = '不及格';

    end

    A(,k) = {r};

end

A