Pinging a user defined veraible in C++

c4nk · 04-02-2007, 05:51 PM

Hi,
I am creating an console ap that will ask user to input an ip address and then its gonna ping it,
and I am stuck at the point of the ping command because i dont know how can i add the user veriable to the ping command itself.
Here is the code.

Code:

#include <stdlib.h>
using namespace std;
int main()
{
   system("cls");
   string ipaddress = "a";
   cout<<"Input an IP address or a name of a host:\n";
   cin >> ipaddress;
   system("ping ", ipaddress);                         //I also tried system("ping " & ipaddress);
   cin.get();
}

I ever tried something like this:

Code:

#include <stdlib.h>
using namespace std;
int main()
{
   system("cls");
   string ipaddress = "a";
   cout<<"Input an IP address or a name of a host:\n";
   cin >> ipaddress;
   ipaddress = "ping ", ipadress;
   system(ipaddress);
   cin.get();
}

If i could get some help on this it be very nice couse this was bugging me for quite a while and I have no clue what the solution to this might be.

nadroj · 04-02-2007, 08:56 PM

Code:

   ipaddress = "ping ", ipadress;

what were you trying to do here?

Code:

#include <iostream>
#include <string>
using namespace std;
int main()
{
   system("cls");
   string ipaddress;
   cout<<"Input an IP address or a name of a host:\n";
   cin >> ipaddress;
   string cmd = "ping " + ipaddress;
   system(cmd.c_str());
   cin.get();
   
   return 0;
}

this is C++, so you dont use .h files. for the "system" function it requires a C-string (char*), that is why you need the <string>.c_str().