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Yes, that should be fine - well, no memory leaks anyway.

Though later on, you might want to introduce a 'maxsize' as well, so you can re-use the buffer if newsize <= maxsize

> So in Salem's example we should "delete [] t" also at the end of every loop?
No you wouldn't.



new
for ( .... ) {
new
....
delete

You're not reallocating anything at the moment.

You need to start with something like
char *s = new char[1];
*s = '\0';

Then each loop iteration is
char *t = new char[i+1];
strcpy(t,s);...

Try strcpy instead of strcat.

The memory you get is uninitialised, and the first thing strcat does is go looking for a \0.
Your memory is filled with junk, so this is a crap-shoot as to what...