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Rev

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IPv4 Integer Conversion Function

Write the shortest function to convert an IP address into its integer representation and output it as an integer.

To change an IPv4 address to its integer representation, the following calculation is required:

Break the IP address into its four octets.
(Octet1 * 16777216) + (Octet2 * 65536) + (Octet3 * 256) + (Octet4)

Sample Input

192.168.1.1           10.10.104.36           8.8.8.8

Sample Output

3232235777            168454180              134744072

Answer*

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\$\begingroup\$ very clever use of main() :) .. my version was 116bytes. \$\endgroup\$

akira
– akira

2011-02-15 14:21:47 +00:00
Commented Feb 15, 2011 at 14:21
\$\begingroup\$ I get a segmentation fault. \$\endgroup\$

Nathan Osman
– Nathan Osman

2011-02-19 03:11:44 +00:00
Commented Feb 19, 2011 at 3:11
\$\begingroup\$ @George, what is your input and how are you running it? \$\endgroup\$

Nim
– Nim

2011-02-21 10:43:44 +00:00
Commented Feb 21, 2011 at 10:43
\$\begingroup\$ I'm running it with my UserScript through codepad.org \$\endgroup\$

Nathan Osman
– Nathan Osman

2011-02-21 19:33:55 +00:00
Commented Feb 21, 2011 at 19:33
\$\begingroup\$ This won't work in C++, you can't call main recursively. \$\endgroup\$

Scott Logan
– Scott Logan

2012-02-26 17:40:07 +00:00
Commented Feb 26, 2012 at 17:40

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