我想找到一个字符通过索引使用汇编语言，但它不会打印该字符的索引。
下面是我的代码：
.model small
.stack 100h
.data
CR equ 13d
LF equ 10d
intro db CR, LF, "Assemby Language Programming Lab Project $"
intro1 db CR, LF, "Project Name: Number Hunt $"
intro2 db CR, LF, "By: Floren Magulod (21-020002) & Shelzy Bareng (21-020035) $"
line db CR, LF, "------------------------------$"
opt1 db CR, LF, "1.Reverse Array $"
opt2 db CR, LF, "2.Calculator $"
opt3 db CR, LF, "3.Hunt the number$"
prompt db CR, LF, "Choose an option: $"
arr1 db CR, LF, "Enter Array size (0-9): $"
arr2 db CR, LF, "Enter Elements (0-9): $"
arr3 db CR, LF, "Reverse form: $"
cal1 db CR, LF, "Enter 1st number: $"
cal2 db CR, LF, "Enter 2nd number: $"
choice1 db CR, LF, "1.Addition $"
choice2 db CR, LF, "2.Subtraction $"
choice3 db CR, LF, "3.Multiplication $"
choice4 db CR, LF, "4.Division $"
res1 db CR, LF, "Result: $"
choice5 db CR, LF, "1.Odd $"
choice6 db CR, LF, "2.Even $"
input1 db CR, LF, "Sum: $"
odd db CR, LF, "Odd numbers: $"
even db CR, LF, "Even numbers: $"
find1 db CR, LF, "Enter a character to find: $"
find2 db CR, LF, "Character is found at index: $"
find3 db CR, LF, "Character is not found $"
retry db CR, LF, 'Retry [y/n] ? ' ,'$'
choice db 0
time dw 0
d db 10 dup(?)
sum db 0
num1 db 0
num2 db 0
rem db 0
char db 10 dup(?)
.code
main proc
mov ax, @data
mov ds, ax
mov ah, 09h
lea dx, intro
int 21h
mov ah, 09h
lea dx, intro1
int 21h
mov ah, 09h
lea dx, intro2
int 21h
mov ah, 09h
lea dx, line
int 21h
start:
mov ah, 09h
lea dx, opt1
int 21h
mov ah, 09h
lea dx, opt2
int 21h
mov ah, 09h
lea dx, opt3
int 21h
mov ah, 09h
lea dx, line
int 21h
mov ah, 09h
lea dx, prompt
int 21h
while:
mov ah,1
int 21h
sub al,48
mov choice,al
cmp choice,2
je calcu
jl reverse
jg even_odd
cmp choice, 3
jg hunt
calcu:
mov ah, 09h
lea dx, cal1
int 21h
mov ah,1
int 21h
sub al,48
mov num1,al
mov ah, 09h
lea dx, cal2
int 21h
mov ah,1
int 21h
sub al,48
mov num2,al
mov ah, 09h
lea dx, line
int 21h
mov ah, 09h
lea dx, choice1
int 21h
mov ah, 09h
lea dx, choice2
int 21h
mov ah, 09h
lea dx, choice3
int 21h
mov ah, 09h
lea dx, choice4
int 21h
mov ah, 09h
lea dx, line
int 21h
mov ah, 09h
lea dx, prompt
int 21h
mov ah,1
int 21h
sub al,48
mov choice, al
cmp choice,2
je subs
jl addi
jg multi
cmp choice,3
je multi
jl subs
jg divi
addi:
mov al,num1
add al,num2
mov ah, 09h
lea dx, res1
int 21h
mov ah,0
mov bl,10
div bl
mov rem,ah
mov dl,al
add dl,48
mov ah,2
int 21h
mov dl,rem
add dl,48
mov ah,2
int 21h
jmp again
subs:
mov ah, 09h
lea dx, res1
int 21h
mov al,num1
sub al,num2
add al,48
mov dl,al
mov ah,2
int 21h
jmp again
multi:
mov ah, 09h
lea dx, res1
int 21h
mov al,num1
mul num2
mov ah,0
mov bl,10
div bl
mov rem,ah
mov dl,al
add dl,48
mov ah,2
int 21h
mov dl,rem
add dl,48
mov ah,2
int 21h
jmp again
divi: ;;wrong fixed it
mov ah, 09h
lea dx, res1
int 21h
mov ah,0
mov al,num1
div num2
add al,48
mov dl,al
mov ah,2
int 21h
jmp again
reverse:
mov ah, 09h
lea dx, line
int 21h
mov ah, 09h
lea dx, arr1
int 21h
mov ah,1
int 21h
sub al,48
mov ah,0
mov time,ax
mov ah, 09h
lea dx, arr2
int 21h
mov cx,time
mov bx,0
val_store:
mov ah,1
int 21h
sub al,48
mov d[bx],al
push ax
add sum,al
inc bx
loop val_store
mov ah, 09h
lea dx, arr3
int 21h
mov cx,time
rev:
pop dx
add dl,48
mov ah,2
int 21h
loop rev
jmp again
even_odd:
mov ah, 09h
lea dx, line
int 21h
mov ah, 09h
lea dx, arr1
int 21h
mov ah,1
int 21h
sub al,48
mov ah,0
mov time,ax
mov ah, 09h
lea dx, arr2
int 21h
mov cx,time
mov bx,0
value_store:
mov ah,1
int 21h
sub al,48
mov d[bx],al
push ax
add sum,al
inc bx
loop value_store
mov cx,time
mov ah, 09h
lea dx, choice5
int 21h
mov ah, 09h
lea dx, choice6
int 21h
mov ah, 09h
lea dx, line
int 21h
mov ah, 09h
lea dx, prompt
int 21h
mov ah,1
int 21h
sub al,48
cmp al, 049
je odd_num
jl even1
odd_num:
mov ah, 09h
lea dx, odd
int 21h
even1:
mov ah, 09h
lea dx, even
int 21h
jmp hunt
summ:
hunt:
mov ah, 09h
lea dx, find1
int 21h
mov ah, 1
int 21h
mov al, 1
lea bx, d
l2:
cmp [bx],al
je PrintFound
cmp al, 10
je NotFound
inc dx
jmp l2
PrintFound:
lea dx, find2
mov ah, 9
int 21h
mov dx, 0
mov bl, al
add al, 48
mov ah, 2
int 21h
jmp again
NotFound:
lea dx, find3
mov ah, 9
int 21h
jmp again
again:
mov ah, 09h
lea dx, line
int 21h
mov ah, 09h
lea dx, retry
int 21h
mov ah, 1h
int 21h
cmp al, 110
je stop
cmp al, 121
je start
jmp again
stop:
mov ax, 4c00h
int 21h我希望它找到我正在寻找的字符索引，然后打印它的索引。
1条答案
按热度按时间laawzig21#
您的主菜单有3个选项，但下面的代码似乎期望有4个选项！
问题是条件跳转的级联已经覆盖了
cmp choice,2指令的所有可能结果：如果它不相等，也不小，那么它就必须更大。因此，cmp choice, 3指令永远不会执行。方案一
保留3个菜单选项（并可能从程序中删除 even_odd 代码），并像这样调度：
方案二
添加第4个菜单选项并相应地派单：