TITLE Elementary Arithemetic Program $($ElementaryArithmeticProgram$.$asm$)$

; Author: Tommy Thao

; Last Modified: $1//25/24$

; OSU email address: thaot@oregonstate.edu

; Course number$/$section: CS$271$ Section $400$

; Project Number: $1$ Due Date: $1/28/24$

; EC: Description: A simple program that will do the following below:

;$1)$Display your name and program title on the output screen.

;$2)$Display instructions for the user.

;$3)$Prompt the user to enter three numbers $($A$,$ B$,$ C$)$ in strictly descending order.

;$4)$Calculate the sum and differences: $($A$+$B$,$ A$-$B$,$ A$+$C$,$ A$-$C$,$ B$+$C$,$ B$-$C$,$ A$+$B$+$C$).$

;$5)$Display the results of the above calculations.

;$6)$Repeat until the user chooses to quit

;$7)$Display a closing message.

INCLUDE Irvine$32.$inc

$.$data

;$--------------------------$

; All variables that would be used for calculations along with strings

;$----------------------------$

userName BYTE "Tommy Thao", $0$

program$\_$title BYTE "Elementary Arithmetic by $",0$

instruction BYTE "Enter $3$ numbers A $>$ B $>$ C$,$ and I'll show you the sums and differences.", $0$

prompt$\_1$ BYTE "First number: $",0$

prompt$\_2$ BYTE "Second number: $",0$

prompt$\_3$ BYTE "Third number: $",0$

num$\_1$ DWORD $?$ ; first integer to be entered by user

num$\_2$ DWORD $?$ ; second integer to be entered by user

num$\_3$ DWORD $?$ ; third integer to entered by user

equals BYTE $"=",0$

plus BYTE $"+",0$

minus BYTE $"-",0$

sum$\_$of$\_$AB DWORD $?$ ; to be caluculated

difference$\_$of$\_$AB DWORD $?$ ; to be caluculated

sum$\_$of$\_$AC DWORD $?$ ; to be caluculated

difference$\_$of$\_$AC DWORD $?$ ; to be caluculated

sum$\_$of$\_$BC DWORD $?$ ; to be caluculated

difference$\_$of$\_$BC DWORD $?$ ; to be caluculated

sum$\_$of$\_$ABC DWORD $?$ ; to be caluculated

close$\_$message BYTE "Thanks for using Elementary Arithmetic! Goodbye!", $0$

$.$code

main PROC

;$-------------------------------$

;Introduction: Displays your name, program title, and instructions

; on the output screen.

; $-------------------------------$

MOV EDX, OFFSET program$\_$title

CALL WriteString

MOV EDX, OFFSET userName

CALL WriteString

CALL Crlf

MOV EDX, OFFSET instruction

CALL WriteString

CALL Crlf

;$-----------------------$

; Get the data:Asks user to enter three numbers for $($A$,$B$,$C$)$ in a descending order and stores them in

; in an array for calculations.

;$--------------------------------------$

MOV EDX, OFFSET prompt$\_1$

CALL WriteString

CALL ReadInt

MOV num$\_1,$ EAX

MOV EDX, OFFSET prompt$\_2$

CALL WriteString

CALL ReadInt

MOV num$\_2,$ EAX

MOV EDX, OFFSET prompt$\_3$

CALL WriteString

CALL ReadInt

MOV num$\_3,$ EAX

;$----------------------------$

;Takes the user's input and calculates the sum and differences:

; $($A$+$B$,$ A$-$B$,$ A$+$C$,$ A$-$C$,$ B$+$C$,$ B$-$C$,$ A$+$B$+$C$)$

;$--------------------------------------------$

; A$+$B

MOV EAX,num$\_1$ ;store num$\_1($A$)$ into eax

ADD EAX, num$\_2$ ; add num$\_1($A$)$ and num$\_2($B$)$

MOV sum$\_$of$\_$AB$,$ EAX ; store result in sum of AB

;A$-$B

MOV EAX,num$\_1$ ; store num$\_1($A$)$ into eax

SUB EAX, num$\_2$ ; subtract num$\_1($A$)$ and num$\_2($B$)$

MOV difference$\_$of$\_$AB$,$ eax ; store result in difference of AB

;A$+$C

MOV EAX,num$\_1$ ; store num$\_1($A$)$ into eax

ADD EAX, num$\_3$ ; add num$\_1($A$)$ and num$\_3($C$)$

MOV sum$\_$of$\_$AC$,$ EAX ; store result in sum of AC

;A$-$C

MOV EAX,num$\_1$ ; store num$\_1($A$)$ into eax

SUB EAX, num$\_3$ ; subtract num$\_1($A$)$ and num$\_3($C$)$

MOV difference$\_$of$\_$AC$,$ EAX ; store result in difference of AC

;B$+$C

MOV EAX,num$\_2$ ; store num$\_2($B$)$ into eax

ADD EAX, num$\_3$ ; add num$\_2($B$)$ and num$\_3($C$)$

MOV sum$\_$of$\_$BC$,$ EAX ; store result in sum of BC

;B$-$C

MOV EAX,num$\_2$ ; store num$\_2($B$)$ into eax

SUB EAX, num$\_3$ ; subtract num$\_2($B$)$ and num$\_3($C$)$

MOV difference$\_$of$\_$BC$,$ EAX ; store result in difference of BC

;A$+$B$+$C

MOV EAX, num$\_1$ ; store num$\_1($A$)$ into eax

ADD EAX, num$\_2$ ; add num$\_1($A$)$ and num$\_2($B$)$

ADD EAX, num$\_3$ ; add num$\_1($A$),$ num$\_2($B$),$ and num$\_3($C$)$

MOV sum$\_$of$\_$ABC, EAX ; store result in sum of ABC

;$--------------------------$

; Displays the results of the above calculations:

; $($A$+$B$,$ A$-$B$,$ A$+$C$,$ A$-$C$,$ B$+$C$,$ B$-$C$,$ A$+$B$+$C$)$

;$---------------------------------------$

;addition of A and B

MOV EAX, num$\_1$

CALL WriteDec

MOV EDX, OFFSET plus

CALL WriteString

MOV EAX, num$\_2$

CALL WriteDec

MOV EDX, OFFSET equals

CALL WriteString

MOV EAX, sum$\_$of$\_$ABC

CALL WriteDec

CALL Crlf

;Subtraction of A and B

MOV EAX, num$\_1$

CALL WriteDec

MOV EDX, OFFSET minus

CALL WriteString

MOV EAX, num$\_2$

CALL WriteDec

MOV EDX, OFFSET equals

CALL WriteString

MOV EAX, difference$\_$of$\_$AB

CALL WriteDec

CALL Crlf

;Addition of A and C

MOV EAX, num$\_1$

CALL WriteDec

MOV EDX, OFFSET plus

CALL WriteString

MOV EAX, num$\_3$

CALL WriteDec

MOV EDX, OFFSET equals

CALL WriteString

MOV EAX, sum$\_$of$\_$AC

CALL WriteDec

CALL Crlf

;Subtraction of A and C

MOV EAX, num$\_1$

CALL WriteDec

MOV EDX, OFFSET minus

CALL WriteString

MOV EAX, num$\_3$

CALL WriteDec

MOV EDX, OFFSET equals

CALL WriteString

MOV EAX, difference$\_$of$\_$AC