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lab3.asm
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.model small
.stack 100h
.data
MaxArrayLength equ 30
ArrayLength dw ?
MsgErrorSum db 0Ah,0Dh,'Sum overflow! Restart program! $',0Ah,0Dh
InputArrayLengthMsgStr db 'Input array length: $'
maxNull db 0Ah,0Dh,'All infinity','$',0Ah,0Dh
ErrorInputMsgStr db 0Ah,0Dh,'Incorrect value!',0Ah,0Dh, '$'
ErrorInputArrayLengthMsgStr db 0Ah,0Dh,'Array length should be not less than 0 and not bigger than 30!', '$'
MsgAverage db 0Ah,0Dh,'Arithmetic mean of array numbers: $',0Ah,0Dh
InputMsgStr db 0Ah, 0Dh,'Input element (-32 768..32 767) : $'
Answer db 20 dup('$'), 0Ah,0Dh, '$'
NumBuffer dw 0
negAcc db 0
NumLength db 7
EnterredNum db 9 dup('$')
nextStr db 0Ah,0Dh,'$'
ten dw 10
minus db 0
Temp dw 0
Array dw MaxArrayLength dup (0)
ArraySum dw 0
cleared db 0
.code
start:
mov ax,@data
mov ds,ax
xor ax,ax
call inputMas
call MakeNormal
inputMas proc
call inputArrayLength
call inputArray
ret
endp
inputArrayLength proc
inputArrayLengthLoop:
mov cx,1
call ShowInputArrayLengthMsg
push cx
call inputElementBuff
pop cx
mov ArrayLength,ax
cmp ArrayLength,0
jle lengthError
cmp ArrayLength,30
jg lengthError
loop inputArrayLengthLoop
ret
endp
lengthError:
call ErrorInput
jmp inputArrayLengthLoop
inputArray proc
xor di,di
mov cx,ArrayLength
inputArrayLoop:
call ShowInputMsg
push cx
call inputElementBuff
pop cx
mov Array[di], ax
add di,2
loop inputArrayLoop
ret
endp
resetNumBuffer proc
add ArraySum,ax
push ax
mov ax,ArraySum
jo badSum
pop ax
mov NumBuffer, 0
ret
endp
inputElementBuff proc
xor ax,ax
xor cx,cx
mov al,NumLength
mov [EnterredNum],al
mov [EnterredNum+1],0
lea dx,EnterredNum
call input
mov cl,[EnterredNum+1]
lea si,EnterredNum
add si,2
xor ax,ax
xor bx,bx
xor dx,dx
mov dx,ten
NextSym:
xor ax,ax
lodsb
cmp bl,0
je checkMinus
checkSym:
cmp al,'0'
jl badNum
cmp al,'9'
jg badNum
sub ax,'0'
mov bx,ax
xor ax,ax
mov ax,NumBuffer
imul dx
jo badNum
cmp minus,1
je doSub
add ax, bx
comeBack:
jo badNum
mov NumBuffer,ax
mov bx,1
mov dx,ten
loop NextSym
mov ax,NumBuffer
mov minus,0
finish:
cmp cleared,0
jne resetNumBuffer
mov NumBuffer,0
mov cleared,1
ret
doSub:
sub ax,bx
jmp comeBack
checkMinus:
inc bl
cmp al, '-'
je SetMinus
jmp checkSym
SetMinus:
mov minus,1
dec cx
cmp cx,0
je badNum
jmp NextSym
badSum:
clc
call ErrorSum
jmp goEnd
badNum:
clc
mov minus,0
call ErrorInput
mov NumBuffer, 0
jmp inputElementBuff
endp
input proc
mov ah,0Ah
int 21h
ret
input endp
ErrorInput proc
lea dx, ErrorInputMsgStr
mov ah, 09h
int 21h
ret
endp
ErrorSum proc
lea dx, MsgErrorSum
mov ah, 09h
int 21h
ret
endp
ShowInputArrayLengthMsg proc
push ax
push dx
mov ah,09h
lea dx, InputArrayLengthMsgStr
int 21h
pop dx
pop ax
ret
endp
ShowInputMsg proc
push ax
push dx
mov ah,09h
lea dx, InputMsgStr
int 21h
pop dx
pop ax
ret
endp
MakeNormal proc
xor cx,cx
xor di,di
xor si,si
xor ax,ax
xor dx,dx
make:
mov ax,ArrayLength
mov Temp,ax
mov minus,0
xor dx,dx
mov ax, ArraySum
xor ch,ch
lea di,Answer
cmp Temp,0
jg setZnak
cmp Temp,0
jl setPlus
return2:
mov [di],'+'
inc di
makeNum:
cmp ch,5
jg saveNum
mov bx,ax
cmp ArrayLength,1
je PushFlag
cmp ax,-32768
je MaxNeg
noMaxNeg:
idiv Temp
cmp minus,0
jne jump
call makeMainPart
cmp minus,1
je incMinus
jump:
cmp ax,0
je increase
add al,'0'
mov [di],al
inc di
mov ax,dx
imul ten
inc ch
jmp makeNum
PushFlag:
mov negAcc,1
MaxNeg:
cmp negAcc,0
je noMaxNeg
mov [di],'3'
inc di
mov [di],'2'
inc di
mov [di],'7'
inc di
mov [di],'6'
inc di
mov [di],'8'
inc di
jmp output
incMinus:
mov ax,dx
mul ten
inc minus
jmp makeNum
increase:
add al,'0'
mov [di],al
inc di
cmp minus,0
je firstSymbol
return:
inc ch
mov ax,bx
imul ten
jmp makeNum
saveNum:
call output
jmp goEnd
goEnd:
mov ax,4c00h
int 21h
ret
endp
makeMainPart proc
push dx
push cx
push bx
xor cx,cx
st:
xor dx,dx
idiv ten
cmp ax,0
jnz go1
cmp dx,0
jnz go1
jmp fin
go1:
inc cx
push dx
jmp st
fin:
loop1:
cmp cx,0
jz ifNoMainPart
pop bx
add bx,'0'
mov [di],bx
inc di
loop loop1
mov [di],'.'
inc di
jmp fin2
ifNoMainPart:
mov [di],'0'
inc di
mov [di],'.'
inc di
fin2:
mov minus,1
pop bx
pop cx
pop dx
ret
endp
setPlus:
push ax
mov ax,Temp
mov bx,-1
imul bx
mov Temp,ax
pop ax
imul bx
jmp return2
setZnak:
cmp ax,0
jge return2
mov [di],'-'
inc di
mov bx,-1
imul bx
jmp makeNum
firstSymbol:
mov al,'.'
mov [di],al
inc di
mov minus,1
jmp return
;
output proc
mov ah,09h
lea dx, MsgAverage
int 21h
lea dx,nextStr
mov ah,09h
int 21h
lea dx, Answer
mov ah,09h
int 21h
dec cl
ret
endp
end start