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 p1,*p2; p2=new MyClass('X'); delete p2; return 0; } 执行这个程序屏幕上将显示输出
A.ABX
B.ABXB
C.AXB
D.AXBB
[单选题]有如下的程序: include include using namespace st有如下的程序: #include<cstring> #include<iostream> using namespace std; class MyString { public: MyString(const char*s); ~MyString(){delete[]data;} Protected: unsigned len; char*data; }; MyString::MyString(const ch
[单选题]有如下程序 include include using namespace std; int main(有如下程序 #include<iostream> #include<iomanip> using namespace std; int main(){ cout<<setprecision(3)<<fixed<<setfill('*')<<setw(8); cout<<12.345<<_______<<34.567; return 0; } 若程序的输出是: ** 12.345**34.5
[单选题]有如下程序: include include using namespace std; int ma有如下程序: #include <iostream> #include <iomanip> using namespace std; int main() { cout.fill('*'); cout << left << setw(4) << 123 << "OK" << endl; return 0; }A.123*OKB.123*OK**C.*123OKD.*123**OK
[单选题]有如下程序:include include using namespace std;class CSum{int x,y有如下程序: #include <iostream.h> #include <iomanip.h> using namespace std; class CSum { int x,y; public: CSum (int x0,int y0):x(x0),y(y0){} friend ostream & operator<<(ostream& os,const
[单选题]有如下程序: include include using namespace std; int main(){ cout<
[单选题]有如下程序: include include using namespace std; int main() {cout.f有如下程序: #include <iostream> #include <iomanip> using namespace std; int main() { cout.fill('*'); cout.width(6); cout.fill('#'); cout<<123<<end1; return 0; } 执行生的输出结果是( )。A. ###123B.12
[单选题]有如下程序:include include using namespace std;class CSum{int x,y;pub有如下程序: #include <iostream> #include <iomanip> using namespace std; class CSum {int x,y; public: CSum(int x0,int y0):x(x0),y(y0) {} friend ostream& operator<<(ostream & os, const
[单选题]有如下的程序:include include using namespace std;class MyString{p有如下的程序: #include <cstring.h> #include <iostream.h> using namespace std; class MyString { public: MyString(const char*s); ~MyString () {delete [] data;} protected: unsigned len; char*data; };
[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<