% listGrades.m   P. Conrad for CISC106, Fall 2006

% Illustrate use of a for loop to step through every value
% in a vector

% Read in a file with grades in it, and print out each grade, along
% with its corresponding letter grade

load grades.dat;

for k = 1:length(grades)

     if (grades(k) >= 90)
        letter = 'A';
     elseif (grades(k) >= 80)
        letter = 'B';
     elseif (grades(k) >= 70)
        letter = 'C';
     elseif (grades(k) >= 60)
        letter = 'D';
     else
        letter = 'F';
     end

     fprintf('Grade %2d is %3d (letter grade: %s)\n', k, grades(k), letter);

end