有以下程序include include using namespace std;class base{private:char

有以下程序 #include ＜iostream＞ #include ＜string＞ using namespace std; class base { private: char baseName[10]; public: base () { strcpy(baseName,"Base"); } virtual char *myName() { return baseName; } char *className() { return baseName; } }; class Derived : public base { private: char derivedName[10]; public: Derived() { strcpy(derivedName,"Derived"); } char *myName() { return derivedName; } char *className() { return derivedName; } }; void showPtr(base &p) { cout＜＜p.myName () ＜＜" "＜＜p.className (); } int main () { base bb; Derived dd; showPtr(dd); return 0; } 运行后的输出结果为

A．Derived Base

B．Base Base

C．Derived Derived

D．Base Derived

[单选题]有以下程序:include include using namespace std;int main ( ){ char b1[8有以下程序： #include ＜iostream＞ #include ＜string＞ using namespace std; int main ( ) { char b1[8] = "abcdefg"; char b2[8],*pb=b1+3; while (--pb＞=b1) strcpy (b2, Pb) ; cout＜＜strlen (b2) ＜＜en

[单选题]有以下程序:include include using namespace std;class point{private: doub有以下程序： #include ＜iostream＞ #include ＜math＞ using namespace std; class point { private: double x; double y; public: point(double a,double b) { x=a; y=b; } friend double distance(point

[单选题]有以下程序:include include using namespace std;class Y;class X{private有以下程序： #include ＜iostream＞ #include ＜string＞ using namespace std; class Y; class X { private: int x; char *strx; public: X(int a, char *str) { x=a; strx=new char[strlen(str)+1]; strcpy(

[单选题]有以下程序:include include using namespace std;int main ( ){ ofstream有以下程序: #include ＜iostream＞ #include ＜fstream＞ using namespace std; int main ( ) { ofstream ofile; char ch; ofile.open ("abc.txt"); cin＞＞ch; while (ch!='#' ) { cin＞＞ch; ofile.put(ch);

[单选题]有以下程序:include include using namespace std;class base{private: cha有以下程序： #include ＜iostream＞ #include ＜string＞ using namespace std; class base { private: char baseName[10]; public: base ( ) { strcpy (baseName, "Base"); } virtual char *myName() {A．De

[单选题]有以下程序:include include using namespace std;class point{private:doubl有以下程序：#include ＜iostream＞#include ＜math＞using namespace std;class point{private: double x; double y;public: point(double a, double b { x=a; y=b; friend double distance (point a, point

[单选题]有以下程序: include include using namespace std; int main() {char arr[有以下程序： #include＜iostream＞ #include＜string＞ using namespace std； int main() { char arr[2][4]； strcpy(arr[0]，"you")； strcpy(arr[1]，"me")； arr[0][3]='&'； cout＜＜arr[0]＜＜end1； retu

[单选题]有以下程序:include using namespace std;int s=0;class sample{ static int n;publi有以下程序: #include ＜iostream＞ using namespace std; int s=0; class sample { static int n; public: sample (int i) { n=i; } static void add() { s+=n; } }; int sample::n=0;A．2B．5C．7D．

[单选题]有如下程序include include using namespace std;class MyClass {public:M有如下程序#include ＜iostream＞#include ＜iomanip＞using namespace std; class MyClass {public:MyClass(){ cout＜＜'A'; }MyClass(char c){ cout＜＜c; }～MyClass(){ cout＜＜'B'; }};int main() {MyClass p

[单选题]有如下程序include include using namespace std;int main( ){cout<