假定有以下程序: Private Sub Form. Click( ) a=1:b=a Do Until a>=5 x=a*b Print b;X a=a+b b=b+a Loop End Sub 程序运行后,单击窗体,输出结果是( )。
A.1 1 2 3
B.1 1 2 4
C.1 1 3 8
D.1 1 3 6
第1题:
有如下程序: #include<iostream> using namespace std; class TestClass { private: int x,y; public: TestClass (int i,int j) { x=i; y=j; } void print() { cout<<"print1"<<end1; } void print()const { cout<<"print2"<<end1; } }; int main() { const TestClass a(1,2); a.print(); return 0; } 该程序运行后的输出结果是( )。
A.print1
B.print2
C.print1 print2
D.程序编译时出错
第2题:
有以下程序:#include <iostream>#include <math>using namespace std;class point{private: double x; double y;public: point(double a, double b { x=a; y=b; friend double distance (point a, point b ; };double distance(point a, point b return sqrt((a. x-b. x )*(a. x -b. x )+ (a. x -b. x)*(a. x-b. x));}int main (){ point p1 (1,2); point p2(5,2); cout<<distance (p1, p2)<<end1; return 0;} 程序运行后的输出结果是
A.1
B.5
C.4
D.6
第3题:
写出下面程序的运行结果,了解do-while语句的使用。 public class cs5 { public static void main(String[] args) { int x = 23; do{ System.out.print(x--); }while(x>20); } }
第4题:
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=20
B.x=20,y=30
C.x=30,y=20
D.x=30,y=30
第5题:
有下列程序: #include<iostream> using namespace std; class TestClass { private: int x,y; public: TestClass (int i,int j) { x=i; y=j; } void print() { cout<<"printl"<<endl; } vo
A.print1
B.print2
C.pfint1 print2
D.程序编译时出错