Somebody help. This is for my special project and to be submitted on monday. It's 11:09pm (saturday) here. i have a problem with my codes. its about when you input a CAPITAL LETTER the output should be in lowercase and vice versa. and also my problem is i dont know to code the " INVALID INPUT" when the input characters have spaces and numbers. that's all. hope someone will help :( i need to pass my subject :(

Here's my code....

DIS MACRO STR
MOV AH,09H
LEA DX,STR
INT 21H
ENDM
DATA SEGMENT
MSG1 DB "INPUT A CHARACTER : $"
MSG2 DB "CONVERTED CHARACTER IS : $"
STR1 DB 20 DUP('$')
LINE DB 10,13,'$'
DATA ENDS

CODE SEGMENT
ASSUME DS:DATA,CS:CODE

START:
MOV AX,DATA
MOV DS,AX
DIS MSG1
MOV AH,0AH
LEA DX,STR1
INT 21H
DIS LINE
MOV CH,00
MOV CL,BYTE PTR[STR1+1]
LEA SI,STR1+2

L1: MOV AH,BYTE PTR[SI]
    CMP AH,'A'
    JL L4
    CMP AH,'Z'
    JG L2
    ADD BYTE PTR[SI],32
    JMP L3

 L2:CMP AH,'a'
    JL L4
    CMP AH,'z'
    JG L4
    SUB BYTE PTR[SI],32

 L3:INC SI
    LOOP L1
    DIS MSG2
    DIS STR1+2

L4:MOV AH,4CH
INT 21H
CODE ENDS
END START

;------
;OUTPUT
;------

ENTER YOUR CHARACTER : JiNeSh
CONVERTED CHARACTER IS : jInEsh

Recommended Answers

This is for my special project and to be submitted on monday.

So what you're asking is basically

Can you do my work for me?

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This is for my special project and to be submitted on monday.

So what you're asking is basically

Can you do my work for me?

nobody is gonna hep you you ASK people to do your homework

The origina; post was from two months ago; it is safe to say that the 48 hour deadline has long since passed. :-p

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