下面程序段的输出结果是 public class Test{ public static void main(String args[]){ int n=5,sum=0; while(n>0){ sum+=n; --n; } System.out.println("sum is"+sum); } }A.sum is 14B.sum is 15C.sum is 10D.sum is 5
下面程序段的输出结果是 public class Test{ public static void main(String args[]){ int n=5,sum=0; while(n>0){ sum+=n; --n; } System.out.println("sum is"+sum); } }
A.sum is 14
B.sum is 15
C.sum is 10
D.sum is 5
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有如下程序: include using namespace std; class Test{ public: Tes 有如下程序: #include<iostream> using namespace std; class Test{ public: Test() {n+=2;} ~Test() {n-=3;} static int getNum(){return n;} private: static int n; }; int Test::n=1; int main() { Test*p=new Test; delete p; cout<<"n="<<Test::getNum()<<endl; return 0; } 执行后的输出结果是( )。A.n=0B.n=1C.n=2D.n=3
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有如下程序:include using namespace std;class Test{public:Test(){n+=2; }~Test(){ 有如下程序: #include <iostream> using namespace std; class Test { public: Test() {n+=2; } ~Test() {n-=3; } static int getNum() {return n; } private: static int n; }; int Test::n=1; int main() { Test* p=new Test; delete p; cout<<"n="<<Test::getNum()<<endl; return 0; } 执行该程序的输出结果是( )。A.n=0B.n=1C.n=2D.n=3
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