Question

Create a MIPS program that does the following:

4. Determine the letter grade a. Use the floating point calculated average to determine the letter grade. You will need to research the instructions to use to do comparisons with floating point numbers. (see Course Resources) b. Use the following chart: 90 - 100 80 - 89 70 - 79 ............. 60 - 69.............. <60 ..................... ............... 5. Display a message and the letter grade. 6. Your output should look similar to the following: How many grades? 2 Enter grade: 59 Enter grade: 63 Average is: 61.0 Your letter grade is: D |-- program is finished running --

Answer 1

Screenshot

GradeCalculator.asm #Program to calculate average and grade of a student #Get grades from user #Calculate average and display #Then find grade and displayu .data prompt1: .asciiz "How many grades: ". prompt 2: . asciiz "Enter grade: " output1: .asciiz "Average is: " output2: .asciiz "nYour letter grade is: " text #Prompt for grades count li $v0,4 la $al, prompti syscall #Read user enter count li $v0,5 syscall #Store count in so move $50, $v0 #Variable for sum mtcl $zero, $f12 Avariable for looning Line: 118 Column: 9 Show Line Numbers Mars Messages Run I/O How many grades: 2 Enter grade: 59 Clear Enter grade: 63 Average is: 61.0 Your letter grade is: D

Program

########################################################################################################
#Program to calculate average and grade of a student
#Get grades from user
#Calculate average and display
#Then find grade and displayu
########################################################################################################
.data
   prompt1: .asciiz "How many grades: "
   prompt2:.asciiz "Enter grade: "
   output1: .asciiz "Average is: "
   output2: .asciiz "\nYour letter grade is: "
.text
   #Prompt for grades count
   li $v0,4
   la $a0,prompt1
   syscall
   #Read user enter count
   li $v0,5
   syscall
   #Store count in s0
   move $s0,$v0
   #Variable for sum
   mtc1 $zero, $f12
   #Variable for looping
   li $t0,0
#Loop to get each score
#Find their total in f12
Loop:
   beq $t0,$s0,next
   #Prompt for grade
   li $v0,4
   la $a0,prompt2
   syscall
   #read grade
   li $v0,6
   syscall
   #Calculate totals
   add.s $f12,$f12,$f0
   addi $t0,$t0,1
   j Loop
#Display outputs
next:
   #Convert count of grades into float for average calculation
   mtc1 $s0, $f2
   cvt.s.w $f2, $f2
   #Calculate average and store in f12
   div.s $f12,$f12,$f2
   #Display average message
   li $v0,4
   la $a0,output1
   syscall
   #Display average
   li $v0,2
   syscall
   #Display grade message
   li $v0,4
   la $a0,output2
   syscall
   #compare if the average less than 100
   li $t1,100
   mtc1 $t1, $f2
   cvt.s.w $f2, $f2
   c.le.s $f12,$f2
   #Compare less than 9
   li $t1,90
   mtc1 $t1, $f2
   cvt.s.w $f2, $f2
   c.lt.s $f12,$f2
   #If greater than or equal 90 goto printA
   bc1f printA
   #Check less than 80
   li $t1,80
   mtc1 $t1, $f2
   cvt.s.w $f2, $f2
   c.lt.s $f12,$f2
    #If greater than or equal 80 goto printB
   bc1f printB
   #Check less than 70
   li $t1,70
   mtc1 $t1, $f2
   cvt.s.w $f2, $f2
   c.lt.s $f12,$f2
    #If greater than or equal 70 goto printC
   bc1f printC
   #Check less than 60
   li $t1,60
   mtc1 $t1, $f2
   cvt.s.w $f2, $f2
   c.lt.s $f12,$f2
   #If greater than or equal 60 goto printD
   bc1f printD
#Otherwise print F
   li $a0,70
   li $v0,11
   syscall
#End of the program
End:
   li $v0,10
   syscall
#Print A label
printA:
   li $a0,65
   li $v0,11
   syscall
   j End
#Print B label
printB:
   li $a0,66
   li $v0,11
   syscall
   j End
#Print C label
printC:
   li $a0,67
   li $v0,11
   syscall
   j End
#Print D label
printD:
   li $a0,68
   li $v0,11
   syscall
   j End

--------------------------------------------

Output

How many grades: 2
Enter grade: 59
Enter grade: 63
Average is: 61.0
Your letter grade is: D
-- program is finished running --

----------------------------------------------------

Note:

I am using MARS4.5 as editor