有如下程序: include using namespace std; int main() { char st

有如下程序： #include ＜iostream＞ using namespace std; int main() { char str[100], *p; cout＜＜"Please input a string:"; cin＞＞str; p=str; for (int i=0; *p!='/0'; p++,i++); cout＜＜i＜＜endl; return 0; }运行这个程序时，若输入字符串为 abcdefgabcd则输出结果是

A．7

B．12

C．13

D．100

[单选题]有如下程序:include using namespace std;using namespace std;class Base{public:vo有如下程序： #include ＜iostream＞ using namespace std； using namespace std； class Base{ public： void fun( ){cout＜＜"Base::fun"＜＜endl：} }； class Derived：public Base{ public： void fun(

[主观题]有如下程序: include using namespace std; int strle(char a[],char b[]) {int num=有如下程序：include ＜iostream＞using namespace std;int strle(char a[],char b[]){int num=O,n=O;while (* (a+num) !='/0')num++;while (b [n] ){* (a+num)=b [n];num++;n++;}return(num);}i

[试题]有如下程序: include using namespace std; class Monitor{ public: Monitor(cha有如下程序：include＜iostream＞using namespace std；class Monitor{public：Monitor(char t)：type(t){ }void Print( )const{cout＜＜"The type of monitor is"＜＜type< private：char type；}；class Com

[试题]有如下程序: include using namespace std; class TestClass{ int k; public: TestCla有如下程序:include＜iostream＞using namespace std;class TestClass{int k;public:TestClass(int x=1):k(x){}～TestClass O{cout＜＜k;}};int main(){TestClass a[]={TestClass(3),TestClass(3),Tes

[试题]有如下程序: include using namespace std; class A { public: virtual void f(){cout有如下程序：include＜iostream＞using namespace std;class A{public:virtual void f(){cout＜＜"1";}};class B:public A{public:B． (){cout＜＜"2";}};class C:public B{public:virtual void f(){

[单选题]有如下程序：#include +using namespace std ；#includeusing namespace std;class Base{public:void fun(){cout<<"Base::fun"<};class Derived:public Base{public:void fun(){cout<<"Derived::fun"<}};int main(){D．erived d;d.fun();return 0;}已知其执行后

[单选题]有如下程序: include using namespace std; class Complex { dou有如下程序: #include＜iostream＞ using namespace std; class Complex { double re, im; public: Complex(double r, double i): re(r), im(i) {} double real() const { return re; } double image() const { return

[单选题]有如下程序: include using namespace std; class Base { public:有如下程序： #include＜iostream＞ using namespace std; class Base { public: void fun() { cout＜＜"Base::fun"＜＜endl; } }; class Derived: public Base { public: void tim() } ____________ cout＜＜"Derived::

[单选题]有如下程序: include using namespace std; int main() { int *p;有如下程序： #include＜iostream＞ using namespace std； int main() { int *p； *p＝9； cout＜＜"The value at p："＜＜*p； return 0； } 编译运行程序将出现的情况是A．编译时出现语法错误，不能生成可执行文件B．运行时一定输出：The value at p:9C．运行时一定输出：The val

[单选题]有如下程序: include using namespace std; class A { public: A(){cout<<"A";} ~A()有如下程序： #include＜iostream＞ using namespace std; class A { public: A(){cout＜＜"A";} ～A(){cout＜＜"～A";) }; class B:public A { A*p; public: B(){cout＜＜"B";p=new A;} ～B(){cout＜