题目要求

统计字符数。从键盘输入一行字符，统计字母、空格、数字、其他宇符的个数，并显示。要求：提示输入一行宇符串；键盘输入宇符串，Enter 键结束输入，并换行显示结果。

题目代码

DATAS SEGMENT
    ;此处输入数据段代码
    msg DB 0ah, 0dh, 'please input string enter:quit$'
   	alpCount DB 0ah, 0dh, 'alpCount:$'
   	spaceCount DB 0ah, 0dh, 'spaceCount:$'   
   	numCount DB 0ah, 0dh, 'numCount:$'   
   	otherCount DB 0ah, 0dh, 'otherCount:$'       
DATAS ENDS

STACKS SEGMENT
    ;此处输入堆栈段代码
STACKS ENDS

CODES SEGMENT
    ASSUME CS:CODES,DS:DATAS,SS:STACKS
START:
    MOV AX,DATAS
    MOV DS,AX
    ;此处输入代码段代码
    mov ch, 0 ;字母
    mov cl, 0 ;空格
    mov bh, 0 ;数字
    mov bl, 0 ;其他字符
    
    input:
    	MOV AH, 1 
	    INT 21H
	    
	    cmp al, 13
	    je output
	    
	    cmp al, ' '
	    je isSpace
	    
	    cmp al, '0'
	    jl isOther
	    
	    cmp al, '9'
	    jle isNum
	    
	    cmp al, 'A'
	    jl isOther
	    
	    cmp al, 'Z'
	    jle isAlp
	    
	    cmp al, 'a'
	    jl isOther
	    
	    cmp al, 'z'
	    jle isAlp
	    jmp isOther
	    
	isSpace:
		inc cl
		jmp input
	
	isOther:
		inc bl
		jmp input
		
	isNum:
		inc bh
		jmp input
	
	isAlp:
		inc ch
		jmp input
		
	output:
		add ch, '0'
		add cl, '0'
		add bh, '0'
		add bl, '0'
		
		MOV DX, OFFSET alpCount
    	MOV AH, 09
    	INT 21H
    	
    	MOV DL, ch
		MOV AH,02H
		INT 21H
		
		MOV DX, OFFSET spaceCount
    	MOV AH, 09
    	INT 21H
		
		MOV DL, cl
		MOV AH,02H
		INT 21H
		
		MOV DX, OFFSET numCount
    	MOV AH, 09
    	INT 21H
		
		MOV DL, bh
		MOV AH,02H
		INT 21H
		
		MOV DX, OFFSET otherCount
    	MOV AH, 09
    	INT 21H
		
		MOV DL, bl
		MOV AH,02H
		INT 21H
		
	    
    MOV AH,4CH
    INT 21H
CODES ENDS
    END START