#include <stdio.h>
#include <string.h>

int main (void)
{
    char hello [] = "Hello";
    char world [] = ", world !";
    char *ptr = 0;
    
    ptr = new char [ strlen (world) + strlen (hello) + 1 ]; /* don't forget about \0 !!! */
    
    strcpy (ptr, hello);
    
    printf ("new string is \"%s\"\n", ptr);
    
    strcat (ptr, world);
    
    printf ("after strcat \"%s\"\n", ptr);
    
    delete [] ptr; /* don't forget to do it !!!  */

    return 0;
}