问题描述
//file:canvas_object.hppclass CanvasObject{public: bool switch_shape() { return switch_shape(true); } bool switch_shape(bool order);//逆时针 or 顺时针}//file:canvas_object.cppinline bool CanvasObject::switch_shape(bool order){ return true;}//file: canvas_view.cpp//一个静态成员bool (CanvasObject:: *CanvasView::_ctl_callfuncs[5])() = { &CanvasObject::move_down, &CanvasObject::move_down, &CanvasObject::move_left, &CanvasObject::move_right, &CanvasObject::switch_shape,};
error：Undefined symbols for architecture i386: 'CanvasObject::switch_shape(bool)', referenced from: CanvasObject::switch_shape() in canvas_view.old: symbol(s) not found for architecture i386clang: error: linker command failed with exit code 1 (use -v to see invocation）
我把那个函数定义中inline去掉编译就通过了，为什么呢？我试过直接让改成bool switch_shape() { return true; }也通过了，我把那个函数指针换成其他函数也没问题，求解
问题解答
回答1：找到说明了，，内联函数要定义在头文件中。。。。编译时内联展开，不会产生函数，所以提示未定义的符号
