/* Problem: Inefficient and confusing */
int foo(int bar)
{
        int return_value = 0;
        int doing_okay = 1;
        doing_okay = do_something( bar );
        if (doing_okay)
        {
                doing_okay = init_stuff();
        }
        if (doing_okay)
        {
                doing_okay = prepare_stuff();
        }
        if (doing_okay)
        {
                return_value = do_the_thing( bar );
        }
        return return_value;
}

/* Problem: Getting murdered by PHB's for using goto */
int foo(int bar)
{
        if (!do_something( bar )) {
                goto error;
        }
        if (!init_stuff( bar )) {
                goto error;
        }
        if (!prepare_stuff( bar )) {
                goto error;
        }
        return do_the_thing( bar );
error:
        return 0;
}

/* Problem: Too many nested blocks, horrible */
int foo(int bar)
{
        int return_value = 0;
        if (do_something( bar )) {
                if (init_stuff( bar )) {
                        if (prepare_stuff( bar )) {
                                return_value = do_the_thing( bar );
                         }
                }
        }
        return return_value;
}

/* Still confusing? */
int foo(int bar)
{
    return (do_something(bar) && init_stuff(bar) && prepare_stuff(bar)) ? do_the_thing(bar) : 0;
}