This is a program I wrote for my x86 assembly class which computes the sum of n numbers. It uses Irvine32.inc which came with the textbook.
Sum of numbers
title Number Addition (add.asm)
; Dani Horowitz
; CSC111 x86 Assembly Programming
; This program adds integers a user inputs
INCLUDE Irvine32.inc
;--------------------------------------------------
.stack ; begin stack segment
;--------------------------------------------------
.data ; begin data segment
sum dword 0
counter dword 0
prompt byte "Enter a value: (0 to stop) ", 0
result byte "The sum of ", 0
count byte " numbers is ", 0
;--------------------------------------------------
.code ; begin code segment
;--------------------------------------------------
;--------------------------------------------------
prompt_user PROC
;
; Take a break! Pauses screen
;--------------------------------------------------
mov edx, OFFSET prompt ; prompt user to enter values
call WriteString
call Crlf
GetValue:
call ReadInt ; read integer from keyboard
jo Overflow ; if ReadInt set overflow flag, jump to Overflow
add sum, eax ; add entered value to accumulator sum
jo Overflow ; if addition set overflow flag, jump to Overflow
cmp eax, 0 ; did user enter 0?
je Done ; if yes, goto Done
inc counter ; increment counter
jmp GetValue ; loop
Overflow:
mov eax, 0
mov sum, 0
Done:
ret
;--------------------------------------------------
prompt_user ENDP
;--------------------------------------------------
;--------------------------------------------------
print_sum PROC
;
; Take a break! Pauses screen
;--------------------------------------------------
mov edx, OFFSET result ; prints "The sum of "
call WriteString
mov eax, counter ; prints count of #s entered
call WriteDec
mov edx, OFFSET count ; prints " numbers is "
call WriteString
mov eax, sum ; prints sum
call WriteDec
call Crlf
ret
;--------------------------------------------------
print_sum ENDP
;--------------------------------------------------
;--------------------------------------------------
main proc
;--------------------------------------------------
call Clrscr ; clear screen
call prompt_user ; get integers
call print_sum ; print their sum
exit
main endp
end main
;--------------------------------------------------
Ichammm
0
Newbie Poster
I need to write a program that reads 5 integer exam scores from the user and take the best 3 scores' average. I got an error I could not find the best 3 scores between 5 of them. Can yo help me to write that?
wildgoose
420
Practically a Posting Shark
You should enter your five integers by looping and storing in an array, then summing the array.
In your code you don't need the compare as the addition will set the zero flag if the result is zero!
add sum, eax ; add entered value to accumulator sum
jo Overflow ; if addition set overflow flag, jump to Overflow
;;; cmp eax, 0 ; did user enter 0?
je Done ; if yes, goto Done
unimo
0
Newbie Poster
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