I was asking if someone would show me a way without using dup. Is is possible to do that just using the x86 instruction set?
Well assembly aint C where libc guarantees that every literal will be suffixed with a NULL terminator...if you program in assembly language then learn to do most of the stuff yourself unless there is a lib of assembly routines that you can draw from...and there is no instruction in the x86 set that you can use for this because you need to know the last character of the entered string...and without that knowledge it is impossible.
Quote:
Originally Posted by Errigour
---------- Post updated at 02:13 AM ---------- Previous update was at 02:11 AM ----------
Also if someone enters exactly 30 characters then it beeps.
Again the problem is not when the no of characters entered equals 30 but when someone enters less than 30 characters...and by initialising "Receive" to all $ signs you basically eliminate this issue.
Quote:
Originally Posted by Errigour
Ok I fixed the beeping problem but I still haven't learned how to concatenate.
If string length is equal to 30 then you can do this too...
Quote:
Originally Posted by Errigour
The fix is:
Why waste resources just for adding a $ to "Receive+30" when the db directive shown above does it for you.
Quote:
Originally Posted by Errigour
I basically send that after I send the variable receive and there are no problems. So solved but I would like to kow how to concatenate with assembly also if you want to post something.
Unless you know the last character of the entered string it isnt possible to emulate the C function strcat...so forget about it.
Quote:
Originally Posted by Errigour
I just thought of a better way to question my concat question.
How can I make dx + 30 = '$'
or maybe how can I make receive[30] = '$'
Again you are confused between a location dx+30 and its contents [dx+30] so first get that straight...the db directive shown above sets Receive[30]='$' or [dx+30]='$'
Hi there,
I found the following script on the net, i like to use it as a standard template for new scripts.
But i do not understand the meaning of the last line, can anybody explain what going on on the last line
vflag=off
filename=
while getopts vf: opt
do
case "$opt" in
v)... (9 Replies)
Hi, i've got the following:
a=`echo $b | grep '^.*/'`
i'm storing in the variable the value of the variable b only if it has a / somewhere.
It works, but i don't want to print the value. How do i give the value of b to the grep command without the echo?
thanks! (5 Replies)
Hello..
I am doing some awk-ing and among all I use substr inside it..
I have: ....substr($0,60,37)
meaning as U all know take from 37 char. from point 60..
can I put it like this substr($0,60,end of line)
meaning take it from point 60 and take all characketrs in that line until line... (2 Replies)
First af all hi.
i want to create a batch script which inform when users log in last time on system or if they are online when they logged in.
I want ot use a file .users which has the usernames of users.
i want to print for example
peter is ONLINE: Logged in on Wed Feb 11 07:47
alex... (2 Replies)
I am looking for some model like this:
My Computer
-------------
Intermediate Server (IS)
-------------
Own Server
I must be able to ssh into the Intermediate Internet Server which is generally an online version of SSH service through which I will connect to Own Server. I was the IS to... (2 Replies)
Can any body tell me when I put close(2), why the code does not show any out put?
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
int main(){
int fd1,fd2,fd3,fd4;
close(2);
fd1=open("test1.txt",O_WRONLY |O_CREAT | O_TRUNC,0744);
fprintf(stderr,"fd1 = %d\n",fd1);
... (5 Replies)
Hello experts,
I am using fork() in my code but I am confused which output comes first child or parent?
I did the following code .My book shows parent first but my linux shows child first.Can anyone tell me why?
#include <stdio.h>
int main(){
int pid;
printf("I am original process with pid... (5 Replies)
Im trying to make a vga program for linux Im wondering if anyone knows of a simple document on the subject or if someone could show me some basics. What system calls should I use what parameters should I give them. How do I draw a line of pixels green after in vga mode. I prefer nasm but I can use... (2 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
I am having a hard time with this assignement i cant get the pfib value to print out the fib sequence.
... (1 Reply)