从键盘输入1-5中的一个数分别在屏幕上显示1st,2st,3st,4st,5st,其他显示*

发布网友发布时间：2022-04-22 20:29

共3个回答

热心网友时间：2023-10-27 20:29

; multi-segment executable file template.

data segment
    ; add your data here!
    str  db 10,13,0
    chr  db ?,"st",10,13,9
    pkey db "press any key...$"
    errmsg db 10,13,"Only 0-5 are acceptable, press any key...$"
ends

stack segment
    dw   128  p(0)
ends

code segment
start:
; set segment registers:
    mov ax, data
    mov ds, ax
    mov es, ax

    ; Read a key from Keyboard
    mov ah, 1
    int 21h

    ; check the key
    cmp al, '0'
    jc  err
    cmp al, '5'
    jnbe err
    mov chr, al
    lea dx, str
    jmp outmsg
err:
    lea dx, errmsg
outmsg:
    mov ah, 9
    int 21h        ; output string at ds:dx

    ; wait for any key....
    mov ah, 1
    int 21h

    mov ax, 4c00h ; exit to operating system.
    int 21h
ends

end start ; set entry point and stop the assembler.

热心网友时间：2023-10-27 20:29

code segment
assume cs:code
start:
mov ah,1
int 21h
cmp al,30h
jbe other
cmp al,36h
jae other
mov dl,al
mov ah,2
int 21h
mov dl,'s'
int 21h
mov dl,'t'
int 21h
jmp tj
other:
mov dl,'*'
mov ah,2
int 21h
tj:
mov ah,1
int 21h
mov ah,4ch
int 21h
code ends
end start

热心网友时间：2023-10-27 20:30

#include<stdio. h>
void main()
{ int a;
scanf("%d",&a);
switch(a)
{
case 1:
case 2:
case 3:
case 4:
case 5:printf("1st,2st,3st,4st,5st\n");break;
default:printf("other!\n");break;
}