..This is how muchth time u r posting the same question...i could see these links for the same question u have posted
*www.thinkdigit.com/forum/showthread.php?t=35215&highlight=c+programming
*www.thinkdigit.com/forum/showthread.php?t=35221&highlight=c+programming
Shud have srchd this grt forum b4 posting any question but see these links..Will help u a lot
*www.thinkdigit.com/forum/showthread.php?t=34710&highlight=c+programming
*www.thinkdigit.com/forum/showthread.php?t=31652&highlight=programming