compare array and update the array

Student={ 'A';'B';'C'};

marks={100;100;100};

exam name={'D';'A';'C';'B'};

new marks={12;34;23;45};

i want to compare the exam name with the student and if it is the same I want the marks to be updated by the marks already in the new marks

[madhan ravi]

write your expected result explicitly

[Hamda Altamimi]

the result is the (new mark) will be be used to update (marks) according to every student

Answer 1

[KSSV]

Student={ 'A';'B';'C'};
marks={100;100;100};
exam_name={'D';'A';'C';'B'};
new_marks={12;34;23;45};


[c,ia] = ismember(Student,exam_name) ;
marks1 = new_marks(ia)

[Hamda Altamimi]

thank you it worked

but i jave two questions

1) is it possible to update the (marks) that have 100 instead of adding a new (mark1)

2) and if the student name is not there I needed it to be 100 un changed

[KSSV]

is it possible to update the (marks) that have 100 instead of adding a new (mark1)

Simply use:

marks = new_marks(ia)

if the student name is not there I needed it to be 100 un changed

Do you think the above lines changing the value if student name is not exisitng?

[Hamda Altamimi]

this didnt works it gave me an error

marks = new_marks(ia)

( if the student name is not there I needed it to be 100 un changed

Do you think the above lines changing the value if student name is not exisitng?) I didnt get what you mean