Objective-C and C interoperability -

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We are going to write a C library and this library has to be accessible from the objective. Now I do not know anything about purpose-C, so I wonder what simple purpose - C & lt; -> What is the difference? Is such a purpose simple to connect to C header and library in C code? Do I have to do something special (like extern "c" with bit C ++)?

extern "C" or anything else.

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