query in reccursion

[bnslpayal]

int giValue = 5; /* Global Variable Declaration */
void fnReverse()
{
if (giValue 0) {
giValue--;
fnReverse();
}
printf("%d\n",giValue);
}

/
************************************************** ************************************************** ********
* why the answer is 0 six times????????????????

************************************************** ************************************************** ******/

[Eric Sosman]

bn*******@gmail.com wrote:

int giValue = 5; /* Global Variable Declaration */
void fnReverse()
{
if (giValue 0) {
giValue--;
fnReverse();
}
printf("%d\n",giValue);
}

/
************************************************** ************************************************** ********
* why the answer is 0 six times????????????????

************************************************** ************************************************** ******/

"Six times" because the values 5,4,3,2,1,0 are a set
of cardinality six.

"0" because giValue is equal to zero at each of the
six executions of the printf call.

--
Eric Sosman
es*****@ieee-dot-org.invalid

[Golden California Girls]

bn*******@gmail.com wrote:

int giValue = 5; /* Global Variable Declaration */
void fnReverse()
{
if (giValue 0) {
giValue--;
fnReverse();
}
printf("%d\n",giValue);
}

/
************************************************** ************************************************** ********
* why the answer is 0 six times????????????????

************************************************** ************************************************** ******/

Because you hit the printf statement 6 times for this loop. Consider this, if
giValue was initialized to zero you would still print it's value once.

[Chris Dollin]

bn*******@gmail.com wrote:

int giValue = 5; /* Global Variable Declaration */
void fnReverse()
{
if (giValue 0) {
giValue--;
fnReverse();
}
printf("%d\n",giValue);
}

/
************************************************** ************************************************** ********
* why the answer is 0 six times????????????????

************************************************** ************************************************** ******/

Because you print the value of `giValue` after the recursion has been
all the way down to the bottom.

As would have been obvious if you'd tried "play machine" or attempted the
induction -- two techniques that I'd advise adding to your kit.

--
Chris "once a formalist, always (but not only) a formalist" Dollin

Hewlett-Packard Limited registered office: Cain Road, Bracknell,
registered no: 690597 England Berks RG12 1HN