API files in Mac os

[newsoft]

i want know location api files in mac
and nead a sample api program

[kbw]

There are many APIs on OS X, it all depends on what you want to do.

[newsoft]

Iwant to know where is store api file on OS X

[kbw]

you need xcode

[newsoft]

where is store api file on OS X

and tell me one api file name on OS X