Question

MIPS -

Takes two inputs from the user, which are the lengths of two sides of a polygon. It adds those two lengths and prints the sum. Your task is modify the program to make it specific to a triangle, and to print the perimeter of that triangle.

See blue highlighted.

preamble: prompt1: prompt2: answer: endline: .data ascii .asciiz asciiz .asciiz asciiz .asciiz "\nThis program, written by <YOUR NAME>," " can be used to add the length of two sides of a polygon <MODIFY THIS TO SAY IT ADDS 3 SIDES OF A TRIANGLE>.\n" "Enter the length of the first side: " # prompt message "Enter the length of the second side: " # prompt message "Sum of two side lengths is" # answer message <MODIFY THIS TO SAY PERIMETER OF TRIANGLE IS # new line "In" .text la $ao, preamble li $v0, 4 # load the addr of preamble into $a0 # 4 is the print_string syscall # print the preamble syscall la $ao, prompt1 li $v0, 4 syscall # load the addr of prompti into $a0 # 4 is the print_string syscall # print the prompt li $v0, 5 syscall # 5 is the read integer syscall # read the integer which gets stored in $vo move $to, $ve # put the integer in $to for for later processing la $ao, prompt2 li $v0, 4 syscall # load the addr of prompt2 into $ao # 4 is the print_string syscall # print the prompt li $v0, 5 syscall # 5 is the read integer syscall # read the integer which gets stored in $v0 move $t1, $ve # put the integer in $ti for for later processing # <ADD CODE TO TAKE INPUT FOR ANOTHER SIDE SINCE YOU ARE DOING THIS FOR A TRIANGLE> # <THE INSTRUCTION ADDS TWO REGISTERS, BUT NOW YOU WILL NEED TO ADD 3 REGISTERS add $t0,$t0,$t1 # add the two side lengths and store result la $ao, answer li $v0, 4 syscall # load the addr of the answer string into $a # 4 is the print string syscall # print the answer string move $a0, $to li $v0, 1 syscall # put the value from $to in $ab for printing # 1 is the print_int syscall # print the answer number la $ao, endline li $v0, 4 syscall # load the addr of endline into $ao # 4 is the print_string syscall # print n endline character # the following 2-line instructions are needed for the program to exit properly li $v0, 10 # 10 is the exit program syscall syscall # exit program

Answer 1

PROGRAM:

.data
   preamble: .ascii "\nThis program, written by PALLAVI, "
       .asciiz "can be used to add three sides of a triangle(i.e., Preimeter of a triangle).\n"
   prompt1: .asciiz "Enter the length of first side: "
   prompt2: .asciiz "Enter the length of second side: "
   prompt3: .asciiz "Enter the length of third side: "
   answer: .asciiz "Perimeter of triangle is: "
.text
.globl main
main:
   li $v0,4       # 4 is the print_string syscall
   la $a0,preamble       # Load the address of preamble into $a0
   syscall           # Printhe the preamble
  
   li $v0,4       # 4 is the print_string syscall
   la $a0,prompt1       # Load the address of prompt1 into $a0
   syscall           # Print the prompt
   li $v0,5       # 5 is the read integer syscall
   syscall           # read the integer which gets stored in $v0
   move $t0,$v0       # put the read integer in $t0 for further processing
  
   li $v0,4       # 4 is the print_string syscall
   la $a0,prompt2       # Load the address of prompt2 into $a0
   syscall           # Print the prompt
   li $v0,5       # 5 is the read integer syscall
   syscall           # read the integer which gets stored in $v0
   move $t1,$v0       # put the read integer in $t1 for further processing
  
   li $v0,4       # 4 is the print_string syscall
   la $a0,prompt3       # Load the address of prompt3 into $a0
   syscall           # Print the prompt
   li $v0,5       # 5 is the read integer syscall
   syscall           # read the integer which gets stored in $v0
   move $t2,$v0       # put the read integer in $t2 for further processing
  
   add $t3,$t0,$t1       # $t3 = a+b i.e., sum of first 2 sides
   add $t3,$t3,$t2       # $t3 = $t3+c i.e., Adding third side to above result
  
   li $v0,4       # 4 is the print_string syscall
   la $a0,answer       # Load the address of answer into $a0
   syscall           # Print the answer string
   li $v0,1       # 1 is the print integer syscall
   move $a0,$t3       # Put the value from $t3 in $a0 for printing
   syscall           # Print the answer number
  
   li $v0,10       # 10 is the exit program syscall
   syscall           # Exit the program

Please refer to the following screenshot of the program for indentation of the code:

Hemo . data preamble: .ascii "nThis program, written by PALLAVI, " .asciiz "can be used to add three sides of a triangle(i.e., Preimeter of a triangle). \n" prompt1: .asciiz "Enter the length of first side: " prompt2: . asciiz "Enter the length of second side: " prompt 3: .asciiz "Enter the length of third side: " answer: .asciiz "Perimeter of triangle is: " .text .globl main main: li $v0,4 # 4 is the print_string syscall la $al,preamble # Load the address of preamble into $a0 syscall # Printhe the preamble 8 li $v0,4 la Sal, promptl syscall li $v0,5 syscall move $t0,$v0 # 4 is the print_string syscall # Load the address of prompti into $a0 # Print the prompt # 5 is the read integer syscall # read the integer which gets stored in $v0 # put the read integer in $t0 for further processing # 4 is the print_string syscall li $v0,4 la $al, prompt2 syscall li $v0,5 syscall move $t1,$v0 # Print the prompt # 5 is the read integer syscall # read the integer which gets stored in $v0 # put the read integer in sti for further processing li $v0,4 la $al, prompt3 syscall li $v0,5 syscall move $t2, $v0 # Load the address of prompt3 into $a0 # Print the prompt # 5 is the read integer syscall # read the integer which gets stored in $v0 # put the read integer in $t2 for further processing add $t3,$t0,$t1 add $t3,$t3,$t2 # $t 3 = a +b i.e., sum of first 2 sides # $t 3 = $t 3+c i.e., Adding third side to above result # 4 is the print_string syscall li $v0,4 la $al, answer syscall li $v0,1 move $a0,$t3 syscall # Print the answer string # 1 is the print integer syscall # Put the value from $t3 in $a0 for printing # Print the answer number li $v0,10 syscall # 10 is the exit program syscall # Exit the program

OUTPUT:

Mars Messages Run I/O This program, written by PALLAVI, can be used to add three sides of a triangle(i.e., Preimeter of a triangle). Enter the length of first side: 6 Enter the length of second side: 4 Enter the length of third side: 2 Perimeter of triangle is: 12 -- program is finished running -- Reset: reset completed. This program, written by PALLAVI, can be used to add three sides of a triangle(i.e., Preimeter of a triangle). Enter the length of first side: 1 Enter the length of second side: 5 Enter the length of third side: 9 Perimeter of triangle is: 15 -- program is finished running -- Reset: reset completed. Clear This program, written by PALLAVI, can be used to add three sides of a triangle(i.e., Preimeter of a triangle). Enter the length of first side: 21 Enter the length of second side: 65 Enter the length of third side: 97 Perimeter of triangle is: 183 -- program is finished running --