;By 笑风生 ;http://blog.csdn.net/xiaofengsheng SAVEREG macro push ax push bx push cx push dx push si push di endm RESAVEREG macro pop di pop si pop dx pop cx pop bx pop ax endm ;************************ data segment msg db ‘Please input your decimal number:’,13,10,’$’ input_string db 200, ?, 200 dup(0) data_ten dw 10 data ends ;************************ code segment ;———————— main proc far assume cs:code, ds:data start: push ds sub ax, ax push ax mov ax, data mov ds, ax ;————– ;main process ;————– lea dx, msg mov ah, 09h int 21h ;input the string lea dx, input_string mov ah, 0ah int 21h ;enter line mov dx, 0ah mov ah, 02h int 21h mov si, 1 mov cl, input_string[si] mov ch, 0 inc si mov ax, 0 mov dx, 0 GET_DECIMAL_LOOP: mul data_ten mov bl, input_string[si] mov bh, 0 sub bx, 30h add ax, bx inc si loop GET_DECIMAL_LOOP call get_oct ret ;——————— ;get_oct function get_oct proc near SAVEREG mov cx, 0 mov bx, 8 GET_OCT_LOOP: div bx push dx mov dx, 0 inc cx cmp ax, 0 jne GET_OCT_LOOP PRINT: pop dx add dx, 30h mov ah, 02h int 21h loop PRINT ;enter and change line mov dl, 0dh mov ah, 02h int 21h mov dl, 0ah mov ah, 02h int 21h RESAVEREG ret get_oct endp main endp ;————————- code ends ;************************* end start