Where I can find examples how to program name server queries? I'm writing smtp client, which will accept internet addresess like firstname.lastname@example.org. I need to query mail server for company.com. I can do this by executing nslookup and piping result to file, but I'm looking more sophisticated solution. Any suggestions?
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This tutorial covers some basics of pointer, pointer arithmetic and function pointer.
What is a pointer:
A pointer is a variable which holds an address. This address might be address of another variable/address of devices/address of fu…