ping

// apple xcode
// paulogp

/* ping */
#include <stdio.h>
#include <stdlib.h>

int main (int argc, const char * argv[])
{
    char the_ip[100] = "localhost";
    char the_command[100];

    printf ("ip: ");
    fgets (the_ip, sizeof(the_ip), stdin);

    sprintf (the_command, "ping -c 5 %s", the_ip);
    system (the_command);

    printf ("done\n");

    return 0;
}