arrays

[slewrate]

Hello, I am suppose to write a program in which you can enter grades for a certain number of students. I am using NASM.

I declare unassigned memory like that:

.UDATA

student resb 20*300 ; for the array of student names
grades resw 20*4 ; and for the array of grades

This is how I try to enter the student names:

mov ax,0 ; and clear ax
start:
;
nwln ;
PutStr msg1 ; inc ax ;
PutInt ax ;
PutCh ":" ;
mov dx,[student] ;
GetStr dx,30 ;
add dx,30 ;
cmp ax,cx ;
jl start ;

once I entered all student names and I assigned grades to it (the same way) I try to retrieve the names like this:

mov dx,[student] ;
PutStr dx ;
add dx,30 ; for 30 character
..and repeat the whole thing

Obviously I am doing something wrong.
Can anybody give me an advice or an example on how to read / retrieve strings and numbers ?
Any help is appreciated.

[kahlinor]

This is NASM? What's with all the comment characters? Or are semicolons used as statement separators here?

I think your problem may be with addressing:

mov dx,[student] ; Load dx with word value at label 'student'

try:
mov dx, student ; Load dx with address of label 'student'

If this doesn't work, 16 bit NASM is not a part of my training, so I can't help further.

You could join the NASM groups in yahoo

http://groups.yahoo.com/group/win32-...guid=164610442
http://groups.yahoo.com/group/linux-...guid=164610442

Although the groups are not focused on DOS, there are users there who are familiar enough with DOS to possibly help you out.

[slewrate]

Thank you. I will give the NASM newsgroup a shot.