A.final int num1 = 10;
B.static int num2 = 20;
C.abstract int num3 = 30;
D.private int num4 = 40;
给出下列代码，如何使成员变量m被方法fun( )直接访问? class Test{ private int m； public static void fun( ){ … } }A．将private int m改为protected int mB．将private int m改为public int mC．将private int m改为static iD．将private int m改为int m
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下面这个程序的结果是 include class A { private: int a; public: void seta( ) ;下面这个程序的结果是#include＜iostream.h＞class A{private:int a;public:void seta( ) ;int geta( ) ;};void A: :seta( ){ a＝1;}int A: :geta( ){ retum a;}class B{ private:int a;public:void seta( ) ;int geta( ) ;};void B: :seta( ){a＝2;}int B: :geta( ){return a;}class C: public A，public B{ private:int b;public:void display( ) ;};void C: :display( ){ int b＝geta( ) ;cout ＜ ＜ b;}void main( ){ C c;c. seta( ) ;c. display( ) ;}A．1B．2C．随机输出1或2D．程序有错
有以下程序:include using namespace std;class A{private:int a;public:A (int i){a有以下程序： #include ＜iostream＞ using namespace std; class A { private: int a; public: A (int i) { a=i; } void disp() { cout＜＜a＜＜","; } }; class B { private: int b; public: B(int j) { b=j; } void disp() { cout＜＜b＜＜","; } }; class C : public B,public A { private: int c; public: C(int k) :A(k-2),B(k+2) { c=k; } void disp () { A::disp (); B::disp (); cout＜＜c＜＜endl; } }; int main () { C obi (10); obj.disp (); return 0; } 程序执行后的输出结果是A．10,10,10B．10,12,14C．8,10,12D．8,12,10
下列程序段中，正确的是______。 ①class MvClass { int var = 100; static int getVar() { return var; } } ②public class MyClass { final int date; void MyClass (int d) { date = d; } } ③public class MyMain { public static void main(String args[]) { System.out.println(Myclass1.date); } } class MyClass1 { int data = 10; } ④class IamAbstract { final int f; double d; abstrct void method(); }A．②④B．①③C．②D．以上都不对
有如下类定义： class Test { public: Test(){a=0;c=0} //① int f(int a)const{this-＞a=a;} //② static int g(){return a;} //③ void h(int b){Test::b;}; //④ private: int a; static int b; const int C; }; int Test::b=0; 在标注号码的行中，能被正确编译的是( )。A．①B．②C．③D．④
下面程序的结果为includeint c;class A{private:int a;static int b;public:A( ){a下面程序的结果为 #include＜iostream.h＞ int c； class A { private： int a； static int b； public： A( ) {a=0；c=0；} void seta( ){a++；} void setb( ){b++；}A．1 2 1B．1 2 2C．1 1 2D．2 2 2
有以下程序:include using namespace std;class sample{private: int x; static int有以下程序：#include ＜iostream＞using namespace std;class sample{private: int x; static int y;public: sample(int a); static void print(sample s);};sample:: sample(int a){ x=a; y+=x;}void sample:: print(sample s){ cout＜＜"x="＜＜s. x＜＜",y="＜＜y＜＜end1;}int sample:: y=0;int main(){ sample s1(10); sample s2(20); sample:: print(s2); return 0;}程序运行后的输出结果是( )。A．x=10,y=20B．x=20,y=30C．x=30,y=20D．x=30,y=30
