C++ 指针 （数组和指针）

int a = 0;int *p = &a;cout<<"a = " << a << " p = " << p << " *p = " << *p <<endl; //输出值，地址，值cout<<"sizeof(a) = "<<sizeof(a)<<endl; // 4 bytescout<<"sizeof(p) = "<<sizeof(p)<<endl; //4 bytesint b[10]; // 未初始化 但是已经分配空间cout<<"sizeof(b) = "<<sizeof(b)<<endl; // 40 bytescout<<"sizeof(*b) = "<<sizeof(*b)<<endl; // 4 bytesint *m = b;cout<<b << "" << m << ""<< *m<<endl;//输出地址，地址，值