hi,
is it possible to write a program to read and print a number without
using standard library functions in C and C++?
if yes ....how?
waiting for a reply...
12  2608 
Letsee++ wrote: hi,
is it possible to write a program to read and print a number without
using standard library functions in C and C++?
Define "read" and "print".
The answer is probably no.
Why would you not want to use the standard library? It's really quite
useful, and, err... part of the standard for a reason.
Ben Pope
--
I'm not just a number. To many, I'm known as a string...
Letsee++ wrote: hi,
is it possible to write a program to read and print a number without
using standard library functions in C and C++?
if yes ....how?
The answer is a definite "maybe". Many platforms offer other, non-standard,
functions that could be used for this. On some, you might even be able to
do some specific hackery to access the hardware directly.
"Letsee++" writes: is it possible to write a program to read and print a number without
using standard library functions in C and C++?
if yes ....how?
You could certainly do it on machines in the DOS era. I can't remember all
the buzz words, x86 comes to mind. You could communicate with the OS via a
kind of back door. I suspect if one were clever enough you might still be
able to do something. I wrote a routine to print (on a *printer*) that
still worked with Windows 98 using these techniques I am thinking of -- I
haven't used it lately. This avoided the heavily burdened GUI way of
printing, so it actually served a purpose. You could do printing
concurrently with program execution is a Windows program (which a "console"
program is).
Consider also what you might do with the system() function.
This question was asked in an IT fest in my college...they asked us to
write a pgm without using std library functions..even if i failed to
develop it ,i want to know how it can be acheived and i have asked many
of my frnds and seniors ,but havent got the answer...
plz help...
Letsee++ wrote: hi,
is it possible to write a program to read and print a number without
using standard library functions in C and C++?
if yes ....how?
waiting for a reply...
Not portable... but...
you could <shudder>use DOS.</shudder> Use _asm to call int 21.
Or just use a non standard library, there are many. ;)
Thomas Ritter
Letsee++ wrote: hi,
is it possible to write a program to read and print a number without
using standard library functions in C and C++?
if yes ....how?
waiting for a reply...
If somehow you can get access to keyboard input and manipulate screen
drawing then the answer is yes.
Ben
Letsee++ wrote: This question was asked in an IT fest in my college...they asked us to
write a pgm without using std library functions..
Well, you can write a program without any libraries, but it won't be able to
do much.
even if i failed to develop it ,i want to know how it can be acheived and
i have asked many of my frnds and seniors ,but havent got the answer...
Was that supposed to be about standard C++ or some system specific
implementation/dialect of C++? In standard C++, there is simply no way.
can anyone illustrate a simple C program for this???
Letsee++ wrote: can anyone illustrate a simple C program for this???
Please post C questions to "comp.lang. c". This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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