Homework & Coursework Questions

# target to make all programs for Lab 9
all: mygrader mygrader2 countgrades

# Problem 1 - grader programs
#complete the dependency and action lines for your filenames
mygrader: driver.o mygrader.o
        cc driver.o mygrader.o -o mygrader.

        driver.0:mygrader.h

        mygrader.o:mygrader.h

mygrader2:
        cc  -o mygrader2

# Problem 2 - grade counter
countgrades: countgrades.o
        cc -o countgrades countgrades.o

# source file dependencies
#       add target lines showing dependencies for your .o files


# utility targets

clean:
        rm -f *.o

real_clean: clean
        rm -f mygrader mygrader1 countgrades

char assign_grade(int score);
/* Given: a score
  Return: a letter grade
*/

#include "mygrader.h"

char assign_grade(int score)
{
  if(score>=90 && score<=100)
   {
    return 'A';}
  if(score>=80 && score<=89)
   {
    return 'B';}
  if(score>=70 && score<=79)
   {
    return 'C';}
  if(score>=60 && score<=69)
   {
    return 'D';}
  if(score>=0 && score<=59)
   {
    return 'F';}
  if(score<0 || score>100)
   {
    return ' ';}
}

#include <stdio.h>
#include "mygrader.h"

int main()
{
    int s;
    char grade;

       while(scanf("%d", &s) == 1)
       {
              printf("%d: ", s);
              grade = assign_grade(s);
              if(grade == ' ')
              {
               printf("illegal score\n");}
              else
              {
              printf("%c\n", grade);}
       }

}

mygrader: driver.o mygrader.o
        cc driver.o mygrader.o -o mygrader
 
driver.0: mygrader.h
 
mygrader.o: mygrader.h

#
# Not used - will not compile without .c or .o files on the cc line
# mygrader2:
#        cc  -o mygrader