MATLAB does not recognize the matrix
조회 수: 1 (최근 30일)
이전 댓글 표시
I'm trying to create a GPA calculator for an assignment and I' m making use of matrix ii = 1:n, but MATLAB never makes use of this matrix and instead gives the message that the right and left sides are not compatible.
clc;clear
n = input('Number of courses taken this semester: ');
for kk = 1:n
u(kk) = input('Enter credit hour: ');
letter(kk) = input('Enter letter grade: ', 's');
if letter(kk) == 'A'
score(kk) = '4.00';
elseif letter(kk) == 'A-'
score = '3.67';
elseif letter(kk) == 'B+'
score(kk) = '3.33';
elseif letter(kk) == 'B'
score(kk) = '3.00';
elseif letter(kk) == 'B-'
score(kk) = '2.67';
elseif letter(kk) == 'C+'
score(kk) = '2.33';
elseif letter(kk) == 'C'
score(kk) = '2.00';
elseif letter(kk) == 'D'
score(kk) = '1.00';
elseif letter(kk) == 'F'
score(kk) = '0.00';
end
qlt_pts = u(kk) * score(kk);
end
fprintf('quality points: %f\n',qlt_pts);
댓글 수: 0
답변 (2개)
Peng Li
2020년 5월 9일
qlt_pts = u(kk) * score(kk);
your score is a char array. so what do you want this multiplication to give you?
Rik
2020년 5월 9일
As Peng Li alludes to: your scores are char arrays. Why? It makes much more sense to store them are numeric arrays. That way you can also use an assignment like this:
score(kk)=2.33;
I would suggest you add an else with error handling. That way you can catch the user providing an incorrect letter grade. You also need to think if you want to keep all the letters that were entered. If you do, you are probably better off using a cell array.
A last point: if you want to compare char arrays you should be using the strcmp function.
댓글 수: 0
참고 항목
카테고리
Help Center 및 File Exchange에서 Data Type Conversion에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!