palindrome in assembly
palindrome in assembly
(OP)
hello Friends,, i need your help please
i don't understand where is the problem in my code it blocked in "the print reverse" step
help me please !! with a simple explanations because i'm new in this
thanks
i don't understand where is the problem in my code it blocked in "the print reverse" step
help me please !! with a simple explanations because i'm new in this
thanks
CODE --> assembly
DATA SEGMENT
STR1 DB "ENTER YOUR STRING HERE ->$"
STR2 DB "YOUR STRING IS ->$"
STR3 DB "REVERSE STRING IS ->$"
INSTR1 DB 20 DUP("$")
RSTR DB 20 DUP("$")
NEWLINE DB 10,13,"$"
N DB ?
S DB ?
MSG1 DB "STRING IS PALINDROME$"
MSG2 DB "STRING IS NOT PALINDROME$"
A DB "1"
DATA ENDS
CODE SEGMENT
ASSUME DS:DATA,CS:CODE
START:
MOV AX,DATA
MOV DS,AX
LEA SI,INSTR1
;GET STRING
MOV AH,09H
LEA DX,STR1
INT 21H
MOV AH,0AH
MOV DX,SI
INT 21H
MOV AH,09H
LEA DX,NEWLINE
INT 21H
;PRINT THE STRING
MOV AH,09H
LEA DX,STR2
INT 21H
MOV AH,09H
LEA DX,INSTR1+2
INT 21H
MOV AH,09H
LEA DX,NEWLINE
INT 21H
;PRINT THE REVERSE OF THE STRING
MOV AH,09H
LEA DX,STR3
INT 21H
MOV CL,INSTR1+1
ADD CL,1
ADD SI,2
L1:
INC SI
CMP BYTE PTR[SI],"$"
JNE L1
DEC SI
LEA DI,RSTR
L2:MOV AL,BYTE PTR[SI]
MOV BYTE PTR[DI],AL
DEC SI
INC DI
LOOP L2
MOV AH,09H
LEA DX,NEWLINE
INT 21H
MOV AH,09H
LEA DX,RSTR
INT 21H
MOV AH,09H
LEA DX,NEWLINE
INT 21H
;PRINT THE STRING IS PALINDROME OR NOT
LEA SI,INSTR1
LEA DI,RSTR
MOV AH,09H
LEA DX,NEWLINE
INT 21H
ADD SI,2
L7:
MOV BL,BYTE PTR[DI]
CMP BYTE PTR[SI],BL
JNE LL2
INC SI
INC DI
MOV BL,BYTE PTR[DI]
MOV AH,02H
MOV DL,BL
INT 21H
MOV AH,09H
LEA DX,NEWLINE
INT 21H
CMP BYTE PTR[DI],"$"
JNE L7
MOV AH,09H
LEA DX,NEWLINE
INT 21H
MOV AH,09H
LEA DX,MSG1
INT 21H
JMP L5
LL2:
MOV AH,09H
LEA DX,NEWLINE
INT 21H
MOV AH,09H
LEA DX,MSG2
INT 21H
L5:
MOV AH,4CH
INT 21H
CODE ENDS
END START
;OUTPUT:-
;Z:\SEM3\SS\21-30>P26
;ENTER YOUR STRING HERE ->ANKIT
;YOUR STRING IS ->ANKIT
;REVERSE STRING IS ->
;TIKNA
;STRING IS NOT PALINDROME 
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