Question

I am facing some problem in C language to extract a valid IP(v4 and v6) from oracle DB for example.

1, if the field is having a ip like : 10.2.33.4.5-34
I should be able to extract 10.2.33.4 only

2, if field have abc-100.2.33.4.545
extract only 100.2.33.4

Hope there is a solution to this in C .

Thanks and Regards,
Mohib

Answer 1

str1[]="10.2.33.4.5-34"

substr(1,11,str1);

str2[]="abc-100.2.33.4.545"

substr(5,14,str2)

The above code should be used in C.