下面程序的运行结果为( )。# include <iostream.h>clas
题型:单项选择题
问题:
下面程序的运行结果为( )。# include <iostream.h>class A{public:A( ) {cout <<"1";}~A( ) {cout << "2";}};class B:public A{public:B( ) {cout << "3";} ~B ( ) {cout << "4";}};void main ( ){B b;}
A.1234
B.1324
C.1342
D.3142