若有如下程序:#includeiostreamusingnamespaeestd;classTestClass{public:voidwho(){coutTestClassendl;}};classTestClassl:publicTestClass{public:voidwho(){coutTestClasslendl;}};intmain(){TestClass*P;TestClasslobj1;p=&obj1;p-who();retum0;}则该程序运行后的输出结果是( )。A.TestClasslB.TestClassC.0D.无输出

若有如下程序:

#include<iostream>

usingnamespaeestd;

classTestClass

{

public:

voidwho(){cout<<"TestClass"<<endl;}

};

classTestClassl:publicTestClass

{

public:

voidwho(){cout<<"TestClassl"<<endl;}};

intmain()

{

TestClass*P;

TestClasslobj1;

p=&obj1;

p->who();

retum0;

}

则该程序运行后的输出结果是( )。

A.TestClassl

B.TestClass

C.0

D.无输出


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