Problem Statement: Write a program to calculate the fractional points earned by each student in a class based on the total of eleven homework scores, four best quiz scores out of five, and the final exam grade. The weight of each category is given below.
Homework 30% Quizzes 35% Final Exam 35%Based on the fractional points, assign a letter grade to each student according to the following scheme.
% Pts Earned Grade
--------------------
90-100 A
80- 89 B
70- 79 C
60- 69 D
0- 59 F
An example of the input is shown below. The user input is
everything but the overall fractional grade and the letter grade.
Homework Quiz Total Grade
--------------------- -------------- ------------- ---------
Student Name #1 #2 #3 ... #9 10 11 #1 #2 #3 #4 #5 hw quiz final fract Letter
Fraction (%) 30% 35% 35%
------------------------------------- -------------- ------------- --------
Possible Score 10 10 20 ... 20 20 20 50 50 50 50 50 180 200 100 1.000 A
------------------------------------- -------------- ------------- --------
Wang, Nam 10 10 20 ... 20 20 15 50 50 50 29 0 173 179 83 0.829 B
Doe, John 10 10 20 ... 20 19 11 60 40 60 50 43 167 213 62 0.794 C
Big, Foot 10 10 10 ... 20 16 9 40 40 40 39 46 148 164 44 0.630 D
: : : : : : : : : : : : : : : : :
------------------------------------- -------------- ------------- --------
Average
Solution:
Problem Statement: You have a file named grade.dat that contains numerical student scores in a class in the following format. The first three lines are the table header.
--------------------
Student Name Score
--------------------
12345678901234 0.563
Perfect, Goody 1.000
Wang, Nam 0.954
Doe, John 0.347
Piggy, Miss 0.457
Frog, Kermit 0.842
Bird, Big 0.730
: :
: :
Write a FORTRAN program to input the name and scores from the
file, count the total number of students, convert the scores to
letter grades according to the following scheme.
-----------------------
Score Grade Number
-----------------------
0.80-1.00 A 4
0.65-0.80 B 5
0.50-0.65 C 3
0.40-0.50 D :
0.00-0.40 F :
-----------------------
Total :
Calculate the distribution of grades in the class and print out a
summary table (see the one shown above). Finally, print out
a separate table which retains the same format as the original
score data but with a new column of letter grades added. (see
the one shown below).
--------------------------
Student Name Score Grade
--------------------------
12345678901234 0.563 C
Perfect, Goody 1.000 A
Wang, Nam 0.954 A
Doe, John 0.347 F
Piggy, Miss 0.457 D
Frog, Kermit 0.842 A
Bird, Big 0.730 B
: : :
: : :
Solution:
c ----------------------------------------------------------------------
c Input the name and scores from a file "grade.dat", which contains student
c scores in a class in the following format.
c --------------------
c Student Name Score
c --------------------
c 12345678901234 0.563
c Perfect, Goody 1.000
c :
c :
c --------------------
c
c Count the total number of students, convert the scores to letter grades
c according to the following scheme.
c ---------------
c Score Grade
c ---------------
c 0.80-1.00 A
c 0.65-0.80 B
c 0.50-0.65 C
c 0.40-0.50 D
c 0.00-0.40 F
c ---------------
c
c ----------------------------------------------------------------------
c Instructor: Nam Sun Wang
c ----------------------------------------------------------------------
parameter (nmax=100)
character name(nmax)*14, grade(nmax)*1
real score(nmax)
c Proram Header --------------------------------------------------------
print *, 'Calculate letter grades from numerical scores.'
open (1, file='grade.dat')
c Skip the 3-line header -----------------------------------------------
do i=1, 3
read(1, 500) name(1)
enddo
c Handle scores --------------------------------------------------------
do i=1, nmax
c Read in various scores -----------------------------------------------
1 read(1, 500, err=1, end=11) name(i), score(i)
c Assign letter grades based on a lookup table -------------------------
c Count the frequencies, as well
if ( score(i) .ge. 0.8 ) then
grade(i) = 'A'
na = na+1
elseif ( score(i) .ge. 0.65) then
grade(i) = 'B'
nb = nb+1
elseif ( score(i) .ge. 0.55) then
grade(i) = 'C'
nc = nc+1
elseif ( score(i) .ge. 0.40) then
grade(i) = 'D'
nd = nd+1
else
grade(i) = 'F'
nf = nf+1
endif
enddo
11 close (1)
c Total number of points handled (The last line does not count.)--------
ntotal = i-1
c Print out a summary of grade distribution ----------------------------
print *, ' '
print *, '-----------------------'
print *, ' Score Grade Number'
print *, '-----------------------'
print 650, ' 0.80-1.00 A', na
print 650, ' 0.65-0.80 B', nb
print 650, ' 0.50-0.65 C', nc
print 650, ' 0.40-0.50 D', nd
print 650, ' 0.00-0.40 F', nf
print *, '-----------------------'
print 650, ' Total ', ntotal
c Print out a summary of total points ----------------------------------
print *, ' '
print *, '--------------------------'
print *, 'Student Name Score Grade'
print *, '--------------------------'
do i=1, ntotal
print 651, name(i), score(i), grade(i)
enddo
c Some formats ---------------------------------------------------------
500 format(a, f6.3)
650 format(a, i8)
651 format(1x, a, f6.3, 3x, a)
end
Problem Statement: You have a Mathcad document that contains numerical homework scores and test scores for a class of students in the following format.
Please help your instructor finish writing the document (via simulation on paper) by performing the following tasks. Compose the Mathcad worksheet in a such a way that you need not change anything else other than the score matrix when you change an individual entry or add more students.
sum(hw scores) sum(qz scores) final exam score
f = -----------------*30% + -----------------*35% + -------------------*35%
perfect hw scores perfect qz scores perfect final score
----------------------------------------
Fractional Letter Number Distribution
Score Grade Grade Frequency
----------------------------------------
0.00-0.40 F = 0 0
0.40-0.50 D = 1 1
0.50-0.65 C = 2 1
0.65-0.80 B = 3 :
0.80-1.00 A = 4 :
----------------------------------------
Total :
Solution:
Problem Statement: Here are a couple of Mathcad worksheets to handle more complicated grading schemes (e.g., more categories, dropping lowest grades, etc.)
Solution:
|
