下面程序的运行结果为
#include<iostream. h>
class A
{
public:
A.( ) {cout < <"1";}
~A( ) {cout < <"2";}
};
class B:public A
{
public:
B.( ) {cout < <"3";}
~B( ) {cout < <"4";}
};
void main( )
{
B. b;
}
A.1234
B.1324
C.1342
D.3142
[单选题]下面程序的运行结果为#includeclass A{public:A.(){cout<<”1”;}~A(){cout<<”2”;}}class B:public A{public:B.(){cout<<”3”;}~B(){cout<<”4”;}}void main(){B. b;}A.1234B.1324C.1342D.3142
[试题]下面程序的运行结果为[ ]。class A} public:int num;A.(int i){num=i;}A.(A &a){num=++a.num;}void print(){cout<<num;}};void main(){A. a(1),b(a);a.print();b.print();}
[单选题]下面程序的运行结果是( )。 public class Test { public static void main (String args[]) { int c=5; System. out. println (C); System. out. println (c++); System. out. println (C); } }A.5 6 6B.5 5 6C.6 7 7D.6 6 6
[单选题]下面程序的运行结果为( )。 #include(iostream.h) Class A { public:A(){cout<<“1”;} ~A(){cout<<“2”;} }; Class B:public:A { public: B(){cout<<“3”;) ~B(){cout<<“4”;} }; Void main() { B b; }A.1234B.1324C.1342D.3142
[单选题]下面程序的运行结果为 include class A {int num; public: A(int) {num=i;} A(A &a下面程序的运行结果为#include<iostream.h>class A{int num;public:A.(int) {num=i;}A.(A & a) {hum=a. num++;}void print( ) {cout < < num;}};void main( ){A. a(1) ,b(a) ;a. print( ) ;b. print( ) ;
[单选题]下面程序的运行结果为 include Class Astatic int n; public: A( ) {n=1;} A(int n下面程序的运行结果为#include<iostream.h>C.lass Astatic int n;public:A.( ) {n=1;}A.(int num) {n=num;}void print( ) {cout < < n;}};int A: :n=2;void main( ){A. a,b(3) ;a. print( ) ;b. print( ) ;co
[单选题]下面程序的运行结果为include class A{ static int n;public:A( ){n=1;}A(int nu下面程序的运行结果为 #include < iostream.h > class A { static int n; public: A( ){n=1;} A(int num){ n = num;} void print( ){cout<< n;} }; int A::n=2; void main( ) { A a,b (3); a.print( ); b.print
[单选题]下面程序的输出结果为( )。 public class Test { public static void main (String args[]) { String X="ABCD"; String Y="EFG"; X=X.substring (X.length()-Y.length()); System.out.println(X); } }A.ABCB.BCDC.EFGD.ABCDEFG
[单选题]以下程序的运行结果为( )。 public class Sun { public static void main(String args[]) { String x="A",y="B",z="C"; for(int m=1;m<=2;m++) { x=y; y=z; z=x; } System.out.println(x+y+z); } }A.ABCB.BCAC.BCBD.CBC
[单选题]以下程序的运行结果为( )。 public class Sun { public static void main(String args[ ]) { String x="A",y="B",z="C"; for(int m=1;m<=2;m++) { x=y; y=z; z=x; } System.out.println(x+y+z); } }A.ABCB.BCAC.BCBD.CBC