What's This?

[Atomic_Sheep]

Hi Guys,

Just bumped into something I've never seen before... here is the code:

struct sockaddr_in peer

struct sockaddr_in peer

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Why are there three elements? I've only ever seen anything instantiated by object/variable type e.g. int, struct, class etc and then the name of that instance of that variable i.e. in this case peer, what does sockaddr_in serve as in this example? An explanation or a web page with the explanation of this would be equally appreciated, I just don't even know what to search for.

[wysota]

"struct sockaddr_in" is a structure type and "peer" is a name of the variable. The "struct" word comes from C and it is not needed in C++. In C you would also often see a typedef which maps "struct X" to "X" and then "X" would be used without the struct keyword.

And if you ask about the structure itself then sockaddr_in is a structure for storing an address for an IP socket.

[Atomic_Sheep]

I think I see thanks.