（ 31 ）有如下程序#include iostreamusing namespace std;Class Base{public:Base(int x=0):valB(x) {coutvalB;}~Base() {coutvalB;}private:int valB;};class Derived:public Base{public:Derived(int x=0,int y=0):Base(x),valD(y){coutvalD;}~Derived() {coutvalD; }private:int valD;};int main(){Derived obj12(2,3);retuen 0;}运行时的输出结果是A ） 2332B ） 2323C ） 3232D ） 3223
（ 31 ）有如下程序
#include <iostream>
using namespace std;
Class Base{
public:
Base(int x=0):valB(x) {cout<<valB;}
~Base() {cout<<valB;}
private:
int valB;
};
class Derived:public Base{
public:
Derived(int x=0,int y=0):Base(x),valD(y){cout<<valD;}
~Derived() {cout<<valD; }
private:
int valD;
};
int main(){
Derived obj12(2,3);
retuen 0;
}
运行时的输出结果是
A ） 2332
B ） 2323
C ） 3232
D ） 3223
相关考题：
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