Question

如何在Objective-C中调用C文件中的一个方法？

我有一个C文件，想在Objective-C 中调用这个C文件中的一个方法，怎么调用？

Answer 1

As Objective-C is a superset of C, it allows developers to mix pure c source files with Object-C source files.But to call a C function from Objective-C, you should not import the .c file in your Objective-C .m file, that won’t work.To call a C function from the Objective-C, you need to create a .h header file to include the C function declaration, and, of cause, include the .h file in the .c source file where the C function resides. Then import the .h file in the .m source file where you would like to call the C function, and simply call the function.

Answer 2

嗯，那就用.m吧。一般cpp文件中定义c函数要加上extern "C"，类似这样#ifndef MODULE_A_H #define MODULE_A_H extern "C" int foo( int x, int y ); #endif

Answer 3

就是引入头文件，按照正常c语言调用啊objective-c是兼容c的