有以下说明语句:structpoint{intx;inty;}p;则正确的赋值语句是() A: point.x=1;point.y=2; B: point={1,2}; C: p.x=1;p.y=2; D: p={1,2};
有以下说明语句:structpoint{intx;inty;}p;则正确的赋值语句是() A: point.x=1;point.y=2; B: point={1,2}; C: p.x=1;p.y=2; D: p={1,2};
下面定义结构体数组的代码段正确的是()。 A: struct POINT{ public double x;//横坐标 public double y;//纵坐标}POINT[] p;p=new POINT[100]; B: struct POINT{ public double x;//横坐标 public double y;//纵坐标}POINT p[100]; C: struct POINT{ public double x;//横坐标 public double y;//纵坐标}POINT p[]=new POINT[100]; D: struct POINT{ public double x;//横坐标 public double y;//纵坐标}POINT p=new POINT[100];
下面定义结构体数组的代码段正确的是()。 A: struct POINT{ public double x;//横坐标 public double y;//纵坐标}POINT[] p;p=new POINT[100]; B: struct POINT{ public double x;//横坐标 public double y;//纵坐标}POINT p[100]; C: struct POINT{ public double x;//横坐标 public double y;//纵坐标}POINT p[]=new POINT[100]; D: struct POINT{ public double x;//横坐标 public double y;//纵坐标}POINT p=new POINT[100];
下列代码中: class Point{ int x,y; public: Point(int a, int b=0); //① Point(Point &aPoint); //②Point(Point *p); //③ 默认的构造函数是 A: ① B: ② C: ③ D: 没有
下列代码中: class Point{ int x,y; public: Point(int a, int b=0); //① Point(Point &aPoint); //②Point(Point *p); //③ 默认的构造函数是 A: ① B: ② C: ③ D: 没有
If X and Y are measured in the same units and we consider a point that lies below a 45° line, then we know that for the X and Y combination associated with this point, <p></p>
If X and Y are measured in the same units and we consider a point that lies below a 45° line, then we know that for the X and Y combination associated with this point, <p></p>
下面为一个点类,重载了负号运算符,将原来点改为其关于原点的对称点。 请填空补充完整程序。 #include [iostream.h][br][/br] class Point{ private: float x; float y; public: Point(){ x = 0; y = 0; } Point(float a, float b){ x = a; y = b; } // 显示坐标 void display() { cout << "X: " << x << " Y:" << y <<endl; } // 重载负运算符 -,取对称点 friend Point operator-(Point a) { Point r; (1) ; (2) ; return r; } }; void main() { Point p1(5, 6); ; // 取对称点 p1.display(); //p1中的x和y值分别为-5和-6 }
下面为一个点类,重载了负号运算符,将原来点改为其关于原点的对称点。 请填空补充完整程序。 #include [iostream.h][br][/br] class Point{ private: float x; float y; public: Point(){ x = 0; y = 0; } Point(float a, float b){ x = a; y = b; } // 显示坐标 void display() { cout << "X: " << x << " Y:" << y <<endl; } // 重载负运算符 -,取对称点 friend Point operator-(Point a) { Point r; (1) ; (2) ; return r; } }; void main() { Point p1(5, 6); ; // 取对称点 p1.display(); //p1中的x和y值分别为-5和-6 }
有如下类定义: class Point{ int x,y; public: Point():x(0),y(0){} Point( int xx, int yy =0) x(xx), y(yy){} }; 若执行语句: Point(2),b[3],*c[4] 则 Point类的构造函数被调用的次数是() A: 2次 B: 3次 C: 4次 D: 5次
有如下类定义: class Point{ int x,y; public: Point():x(0),y(0){} Point( int xx, int yy =0) x(xx), y(yy){} }; 若执行语句: Point(2),b[3],*c[4] 则 Point类的构造函数被调用的次数是() A: 2次 B: 3次 C: 4次 D: 5次
有如下类定义: class Point { int x_,y_; public: Point():x_(0),y_(0){ } Point(int x,int y=0):x_(x),y_(y){} }; 若执行语句 Point a(2),b[3],*c[4]; 则Point类的构造函数被调用的次数是
有如下类定义: class Point { int x_,y_; public: Point():x_(0),y_(0){ } Point(int x,int y=0):x_(x),y_(y){} }; 若执行语句 Point a(2),b[3],*c[4]; 则Point类的构造函数被调用的次数是
有如下类的定义[br][/br] public class Point { int x;[br][/br] int y;[br][/br] public void show(){ System.out.println("x="+x+",y="+y)[br][/br] }[br][/br] public Point(){[br][/br] }[br][/br] public Point(int x , int y){ this.x = x;[br][/br] this.y = y;[br][/br] }[br][/br] } Point p1 = new Point(); Point p2 = new Point(); Point p3 = new Point(1,1); 关于创建的对象说法不正确的是() A: p1==p2的值是true B: p1.show()的输出结果是x=0,y=0 C: p3.show()输出的结果是x=1,y=1 D: p1.x = 10,是将p1对象的x属性赋值为10,不能改变p2和p3对象的x属性值。
有如下类的定义[br][/br] public class Point { int x;[br][/br] int y;[br][/br] public void show(){ System.out.println("x="+x+",y="+y)[br][/br] }[br][/br] public Point(){[br][/br] }[br][/br] public Point(int x , int y){ this.x = x;[br][/br] this.y = y;[br][/br] }[br][/br] } Point p1 = new Point(); Point p2 = new Point(); Point p3 = new Point(1,1); 关于创建的对象说法不正确的是() A: p1==p2的值是true B: p1.show()的输出结果是x=0,y=0 C: p3.show()输出的结果是x=1,y=1 D: p1.x = 10,是将p1对象的x属性赋值为10,不能改变p2和p3对象的x属性值。
8.5 阅读程序,写出运行结果 class Point{ int x=1; static int y=2; public void show(){System.out.println(x+","+y); }} public class tempDemo{ public static void main(String []args){ Point p1=new Point();p1.show(); p1.x=2;p1.y=3; Point p2=new Point();p2.show(); p1.show(); p1.y=5; p2.show(); }}
8.5 阅读程序,写出运行结果 class Point{ int x=1; static int y=2; public void show(){System.out.println(x+","+y); }} public class tempDemo{ public static void main(String []args){ Point p1=new Point();p1.show(); p1.x=2;p1.y=3; Point p2=new Point();p2.show(); p1.show(); p1.y=5; p2.show(); }}
对于以下的变量定义,表达式______是不正确的。struct { float x, y;} point, *p=&point;
对于以下的变量定义,表达式______是不正确的。struct { float x, y;} point, *p=&point;