std::vector <int> pred = { 1, 2 ,4 };
std::cout << "&pred: " <<&pred << std::endl;
std::cout << "&pred[0]: " <<&pred[0] << std::endl;
结果为:
&pred: 000000CBE0FCE728
&pred[0]: 0000020B463463E0
如上所示的代码,&pred[0]与&pred值不同,&pred[0]是pred中第一个元素的地址,那么&pred有什么意义吗?感谢!