输入以$结尾的字符串，统计并输出非数字字符的个数

程序运行：

 

代码：

datas segmentstring                   db  100h dup(?)nonNumberCount           dw  0inputPrompt              db 'input string and end by $:'inputPromptLen           dw $-inputPromptoutputNonnumberCount     db 0dh,0ah,'output nonnumber count:$'datas endsstacks segment stackdb  100h dup(?)stacks endscodes segmentassume cs:codes,ds:datas,ss:stacks
main   proc  far
start:push dsmov ax,0hpush axmov ax,datas          ;初始化dsmov ds,axlea si,inputPrompt          ;输出输入提示mov ah,2mov cx,inputPromptLen       ;输出输入提示的字符串长度  s2: mov dl,[si]int 21h                   ;输出提示字符inc siloop s2mov ah,1                    ;输入设置mov bx,0                    ;记录输入有效的字符个数s:int 21hcmp al,'$'                ;以'$'结束输入je breakcmp al,'0'                ;判断字符是否大于'0'jb nonNumber              ;若小于'0'，则计数器加1cmp al,'9'                ;判断字符是否大于'9'ja nonNumber              ;若大于'9'，则计数器加1jmp s1nonNumber:                ;非数字字符，计数器加1inc bxs1:jmp sbreak: mov nonNumberCount,bx       ;保存计数器lea dx,outputNonnumberCount     ;输出计数器提示mov ah,9int 21hmov ax,nonNumberCount           call print                     ;输出计数器retmain endpprint proc nearmov cx,0mov bx,10sprint:mov dx,0div bxpush dxinc cxcmp ax,0                jne sprintsprint1:pop dxadd dl,30h                 ;加30h，转成数字字符mov ah,2int 21hloop sprint1retprint endp
codes endsend main