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May 10th, 2007

problem with system() function...

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hello there, im having trouble with the system() function...as much as possible, i would like my program to be dynamic...i created a program that will make an iso file...it will ask the user to input the directory that he would like to compress...the problem is, how do i append this to the system() function...here is my code...

c Syntax (Toggle Plain Text)
_________________________________________
 
#include <stdlib.h>
#include <iostream>
 
using namespace std;
 
 
const char *directory;
 
int main(){
 
         cout << "enter directory name: ";
         cin >> directory;
         system("ls -l");
         system("mkdir"+directory);
         system("mkisofs -J -o filename.iso "+directory);
 
return 0;
 
}
______________________________________________
_________________________________________

#include <stdlib.h>
#include <iostream>

using namespace std;


const char *directory;

int main(){

         cout << "enter directory name: ";
         cin >> directory;
         system("ls -l");
         system("mkdir"+directory);
         system("mkisofs -J -o filename.iso "+directory);

return 0;

}
______________________________________________

notice the + directory?? lol...it's obviously wrong...help pls...

Last edited by WaltP; May 10th, 2007 at 1:30 am. Reason: Added CODE tags -- you actually typed right over how to use them when you entered this post...

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jaepi

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since Jul 2006

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May 10th, 2007

Re: problem with system() function...

The easiest way is to make a C++ string and use its concatenation operator (which happens to be the plus operator). Use the c_str method to get the C-style string that's similar to the C++ string you've concatenated that the system function needs.

C++ Syntax (Toggle Plain Text)
#include <stdlib.h>
#include <iostream>
#include <string>
 
using namespace std;
 
 
int main(){
 
  string directory;
 
  cout << "enter directory name: ";
  cin >> directory;
  system("ls -l");
  system(("mkdir " + directory).c_str());
  system(("mkisofs -J -o filename.iso " + directory).c_str());
 
  return 0;
 
}
#include <stdlib.h>
#include <iostream>
#include <string>

using namespace std;


int main(){

  string directory;

  cout << "enter directory name: ";
  cin >> directory;
  system("ls -l");
  system(("mkdir " + directory).c_str());
  system(("mkisofs -J -o filename.iso " + directory).c_str());

  return 0;

}

Rashakil Fol

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since Jun 2005

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May 10th, 2007

Re: problem with system() function...

If all that you are going to do is to use C++ to
make calls to commands to the CLI , why don't
you just make a script in bash with those commands?.

Aia

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Nearly a Posting Maven

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since Dec 2006

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May 10th, 2007

Re: problem with system() function...

Click to Expand / Collapse Quote originally posted by Aia ...

If all that you are going to do is to use C++ to
make calls to commands to the CLI , why don't
you just make a script in bash with those commands?.

im going to make this as a function to my other c++ program...i was just testing it...

jaepi

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