10个汇编程序设计 编一个程序，实现简单的字处理程序功能---光标可以上下左右移动

实例2程序2：从键盘上获得若干个十进制数，求他们的平均值，并输出到屏幕上 .从键盘上输入若干个十进制数，并计算它们的平均值，并在屏幕上显示这个平均值 DATA SEGMENT INPUT DB 4 DB ? DB 4 DUP (?) DB '$' NUM DW 20 DUP(?) AVE DB ? OUTPUT1 DB 'INPUT A NUMBER',0DH,0AH,'$' OUTPUT2 DB 'INPUT AGAIN(END WITH #)',0DH,0AH,'$' OUTPUT3 DB 'AVERAGE IS:','$' DATA ENDS ;---------------- CODE SEGMENT ASSUME CS:CODE,DS:DATA MAIN PROC FAR PUSH DS XOR AX,AX PUSH AX MOV AX,DATA MOV DS,AX START:MOV DX,OFFSET OUTPUT1 MOV AH,9 INT 21H MOV BL, 0 MOV DI,OFFSET NUM MOV DX,OFFSET INPUT MOV AH,0AH INT 21H MOV DX,OFFSET INPUT+2 MOV AH,9 INT 21H MOV SI,OFFSET INPUT+1 MOV CL,[SI] INC SI MOV CH,0 CALL ADECXB MOV [DI],AX INC BL INC DI INC DI INN: MOV DX,OFFSET OUTPUT2 MOV AH,9 INT 21H MOV DX,OFFSET INPUT MOV AH,0AH INT 21H MOV SI,OFFSET INPUT+1 MOV CL,[SI] INC SI CMP BYTE PTR [SI],'#' JZ DONE MOV CH, 0 CALL ADECXB MOV [DI],AX INC BL INC DI INC DI JMP INN DONE: MOV DX, 0 PUSH BX MOV DI,OFFSET NUM R: MOV AX,[DI] ADD DX,AX INC DI INC DI DEC BL CMP BL,0 JNZ R MOV AX,DX MOV DX,OFFSET OUTPUT3 PUSH AX MOV AH,9 INT 21H POP AX POP BX DIV BL MOV AH,0 MOV BL,100 DIV BL MOV BH,AL ADD BH,30H MOV DL,BH PUSH AX MOV AH,2 INT 21H POP AX MOV AL,AH MOV AH,0 MOV BL,10 DIV BL ADD AL,30H MOV DL,AL PUSH AX MOV AH,2 INT 21H POP AX ADD AH,30H MOV DL,AH MOV AH,2 INT 21H RET MAIN ENDP ;------------- ADECXB PROC PUSH BX PUSH CX PUSH DX PUSH SI MOV BH,0 XOR AX,AX AGAIN:ADD AX,AX MOV DX,AX ADD AX,AX ADD AX,AX ADD AX,DX MOV BL,[SI] AND BL,0FH ADD AX,BX INC SI LOOP AGAIN POP SI POP DX POP CX POP BX RET ADECXB ENDP CODE ENDS END MAIN