stupid c casting question

Q_Ball · 2004-10-26 09:54:20

hey guys, I have a newtork ip that is a long int (returned from the ntohl function) in c. When displayed on screen it comes up as hex. i want to display this as a proper ip address, therefore i (think i) need to cast itchar decimalip [4] so that i can display each element and put a . between them. Any ideas as to how this…

26-10-2004 09:54AM

#1
Q_Ball

Registered Users, Registered Users 2 Posts: 2,323 ✭✭✭

Join Date: December 1999

Posts: 2160
hey guys,

I have a newtork ip that is a long int (returned from the ntohl function) in c. When displayed on screen it comes up as hex. i want to display this as a proper ip address, therefore i (think i) need to cast it
char decimalip [4]
so that i can display each element and put a . between them.

Any ideas as to how this is done?

all the best,

darren

0

Comments

#2 26-10-2004 11:15AM

jessy

Registered Users, Registered Users 2 Posts: 950 ✭✭✭

Join Date: December 2002

Posts: 876

how are you printing it to the screen.

0
#3 26-10-2004 11:17AM

martinoc

Registered Users, Registered Users 2 Posts: 53 ✭✭

Join Date: September 2003

Posts: 50

If all you want to do is print the ip address to the standard out, printf should be able to convert from hex to decimal with the %d placeholder. Casting will not convert the numbers from hex into decimal.

0
#4 26-10-2004 02:10PM

lynchie

Registered Users, Registered Users 2, Paid Member Posts: 2,033 ✭✭✭

Join Date: November 2001

Posts: 1914

inet_ntoa function will convert it to a string.

0