Using MS-DOS in C++

[darkzhac]

Hi... I am a new one here

the system() command is a very strong command, it can create havoc providing you know how to use it....

the argument to this command is what you type next to a prompt.....

you have to do lots of research here..... whatever is typed is executed in a prompt available in the comspec evironment variable in windows.... here is the main part, there are two things here one is cmd.exe and the other command.com, both appear to be the same. but they are not..... they have different methods of access towards the processor and yes this function depends on two headers process.h and stdlib.h

so lets go to the coding.
#include<stdlib.h>
#include<process.h>
void main()
{
system("cmd /c start notepad");
}

the "cmd/c" is and important one cause, comspec variable wouldn't allow everything to be executed.
---limitations.... the execution of set command is not accurate and the systemvaraible like "%userprofile%" cannot be used properly

-------------------
so i have given you something.... you can continue to think more in it....like you can put the above coding in an unending loop and insert more of "cmd /c start [your fav application]" and see what happens

and you can even edit registry with this

system("reg add [ur key]");

for more information type reg add /? in cmd.exe and learn more

editing registry can make serious damages to ur o/s

[nathandelane]

It is not Ms-DOS
unless you program it for MS-DOS of course
you do realize that this works under Linux freeBSD macOS and most OSes out there?
it just executes a system command system()
and cmd itself under windows it's just the terminal not ms-dos <.<

+1 to comperr. I know that "PAUSE" does not exist as a command in Linux, but here's a little extra proof: Linux/UNIX Pause Command.

On the other hand, running the following produces the crazy following output in a DOS prompt:

Code: Select all

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

U:\>help pause
Suspends processing of a batch program and displays the message
    Press any key to continue . . .
U:\>

[Orion001]

If your question hasn't been answered already, simply do this:

Code: Select all

#include <cstdlib>

int main ( void)
{
string mycommand = "ipconfig"; //You can use cin or scanf or whatever to put your input into here
system(mycommand.c_str());
}

This should work fine, tell me if it doesn't
Hope it helps!