函数返回应该是个右值吧，为啥能放在左边（红色标示的部分）？
1楼class A1{public: A1() { std::cout<<"A1()"<<std::endl; } A1(const A1& a1) { std::cout<<"A1(const A1& a1"<<std::endl; } A1& operator=(const A1& a1) { std::cout<<"operator=(const A1& a1)"<<std::endl; } int* pi;};A1 GetA(){ std::cout<<" GetA() begin"<<std::endl; A1 a1; std::cout<<" GetA() end"<<std::endl; return a1;} int main(){?? A1 a1;?? GetA() = a1;} 1 楼 deepfuture 2010-11-18 GetA() = a1;