6-17.asm

自己写的一些MASM的小程序

;统计正数,负数,零的个数
DATA	SEGMENT
DA_WORD   DW -1,3,5,0,-5,-7,4,0,-7,0,4,6
CUNT1	DB $-DA_WORD
CUNT2	DB 0 ;存放正数个数
CUNT3	DB 0 ;存放零的个数
CUNT4	DB 0 ;存放负数的个数
STRING1	DB 'THE NUMBER OF PLUS IS:','$'
STRING2	DB 0AH,0DH,'THE NUMBER OF ZERO IS:','$'
STRING3	DB 0AH,0DH,'THE NUMBER OF NEGATIVE IS:','$'
BASE	DB 30H
DATA	ENDS
STACK1	SEGMENT PARA STACK
	DW 120H DUP(0)
STACK1	ENDS
COSEG	SEGMENT
	ASSUME CS:COSEG,DS:DATA,SS:STACK1
START:	MOV AX,DATA
	MOV DS,AX
	XOR AX,AX
	XOR BX,BX
	XOR CX,CX
	XOR DX,DX
	LEA SI,DA_WORD
	MOV CL,CUNT1
LOP:	TEST WORD PTR DA_WORD[SI],0FFFFH
	JE  ZERO
	TEST WORD PTR [SI],8000H
	JE PLUS
	INC DL;负数的个数
	JMP NEXT
PLUS:	INC DH ;正数个数
	JMP NEXT
ZERO:	INC CH ;零的个数	
NEXT:	INC SI
	INC SI
	DEC CL
	DEC CL
	JNE LOP
	MOV CUNT2,DH ;存结果
	MOV CUNT3,DL
	MOV CUNT4,CH
	MOV DX,OFFSET STRING1;显示
	MOV AH,09H
	INT 21H
	MOV CL,CUNT2
	ADD CL,BASE
	MOV DL,CL
	MOV AH,02H
	INT 21H
        MOV DX,OFFSET STRING2
	MOV AH,09H
	INT 21H
	MOV CL,CUNT4
	ADD CL,BASE
	MOV DL,CL
	MOV AH,02H
	INT 21H
	MOV DX,OFFSET STRING3
	MOV AH,09H
	INT 21H
	MOV CL,CUNT3
	ADD CL,BASE
	MOV DL,CL
	MOV AH,02H
	INT 21H
	MOV AH,4CH
	INT 21H
COSEG	ENDS
	END START