Help me with GPA calculation

Create a program that will calculate a student’s GPA using switch statements. The program should prompt the user for the number of courses (which determines a for loop counter). Then the program will ask for the letter grade (string variable) and the credit hours for that course. It will take those inputs and then calculate the student’s GPA based on the following 4.0 grading scale. Add the credit hours and the grade point hours on each pass through the loop. Upon completion of the loop, calculate the final grade point average (grade point hours/credit hours).

Hint: keep 2 scalar running totals in the loop: (1) total_hours, and (2) total_earned

Letter Grade  Grade Points
A  4.0
A-  3.7
B+  3.3
B  3.0
B-  2.7
C+  2.3
C  2.0
Letter Grade  Grade Points
C-  1.7
D+  1.3
D  1.0
D-  0.7
E  0.0

Test your program with the following two cases:

a.  A,  B- , B+   with credit hours [3 5 5]
b.  B+, C-, D  with credit hours [5 4 3]

This is what I have..

clear
clc

for u = 1:2;
c = input('Enter Your Grade','s')
e = input('Enter Credit hours')
switch c
    case A;
        disp(4.0);
    case A-;
        disp(3.7);
    case B+;
        disp(3.3);
    case B;
        disp(3.0);
    case B-;
        disp(2.7);
    case C+;
        disp(2.3);
    case C;
        disp(2.0);
    case C-;
        disp(1.7);
    case D+;
        disp(1.4);
    case D;
        disp(1.0);
    case D-;
       disp(0.7);
    case E;
        disp(0);

end
end

and I am kinda stuck on it. Help me people

Answer 1

[Walter Roberson]

I suggest you look at http://www.mathworks.com/help/matlab/ref/switch.html#bucqfa5-2