is recursion necessary? (was Re: Should I convert FORTRAN code to C?)

[Wayne Schlitt]

I used to think that recursion was unnecssary and very expensive, but
now i am not so sure.  what about the cases where you recurse from
more than one place?  can you do that without a stack of flags and
lots of ifs?  an example, how would you do something like this:


void fna( x, y, z )
    int x, y, z;
{
    /* a bunch of setup */

    if( /* some test */ )
    {
	/* a bunch of code */

	fna( a, b, c );

	/* a bunch more code */
    }
    else
    {
	/* some different code */

	if( /* some other test */ )
	    fna( d, e, f );

	/* yet some more code */
    }

}


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Wayne Schlitt                                  |  Design Data Corporation
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