汇编语言程序实例(2)

汇编语言程序实例

MOV SI,DX

XLAT

STOSB

MOV AX,SI

RET

NUMBER ENDP

CODE ENDS

END MAIN

第二份：设有100个学生的成绩存放在RECORD为首地址的字节数据区中,试编写分支程序分别统计成绩为60~69分,70~79分,80~89分,90~99分,100分的人数(假设成绩都及格),分别存放在G6,G7,G8,G9,G10单元中.

data segment

record db 100 dub (?)

g6 db 0

g7 db 0

g8 db 0

g9 db 0

g10 db 0

data ends

code segment

assume cs:code,ds:data

start:

mov ax,data

mov ds,ax

lea si,record

mov cx,100

next:

mov al,[si]

cmp al,60

jb nextn

cmp al,70

jnb next7

inc g6

jmp nextn

next7:

cmp al,80

jnb next8

inc g7

jmp nextn

next8:

cmp al,90

jnb next9