CODEWITHSUNDEEP
x86-16assembly
Foo
Foo

Reputation: 319

Can we use '\n' in assembly?

Count the number of characters in an input line and terminate if enter is pressed.

MOV AX, 1
MOV AL, 0
INPUT:  INT 21H
    INC AL
    CMP DL,'\n'
    JE OUT
    LOOP INPUT
OUT:

In the above code I have used \n. I am curious if we can use it or I would have to use the ascii code of it? Please help.

Upvotes: 0

Views: 8486

Answers (2)

wallyk
wallyk

Reputation: 57794

'\n' is not an assembly language constant. At least not in most assembly languages.

You will have to convert it directly using the character set in use. You can safely assume ASCII on almost all modern processors, so \n will be 10 (decimal) on most operating systems. On Windows the two-character sequence 13 and 10 is used.

Upvotes: 2

lunixbochs
lunixbochs

Reputation: 22415

It depends entirely on your assembler. Probably yes, otherwise use an ascii table to translate it (to 0x0A or 10) yourself.

You should probably just try assembling it and see whether it works.

Upvotes: 2

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