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problem with system() function...

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Join Date: Jul 2006

Posts: 647

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Solved Threads: 4

jaepi

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problem with system() function...

May 10th, 2007

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...

 Help with Code Tags 
 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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Join Date: Jun 2005

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Re: problem with system() function...

May 10th, 2007

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.

 Help with Code Tags 
 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;

}