下面哪个函数是public void methd{...}的重载函数?()
A.public void method(int m){…}
B.public int method(){…}
C.public void method2(){…}
D.public int method(int m, float f){…}
A.public void method(int m){…}
B.public int method(){…}
C.public void method2(){…}
D.public int method(int m, float f){…}
A.protected int ConstOver (){ }
B.private ConstOver (int z, int y, byte x) { }
C.public object ConstOver (int x, int y, int z) { }
D.public void ConstOver (byte x, byte y, byte z) { }
A.234
B.1234
C.23
D.123
A.public static void main
B.public static void main(String args[])
C.public static int main(String args[])
D.public void main()
/****************** 文件shape.h*************************/
const float PI=3.14159f; // 定义圆周率常量
class Shape // 几何图形抽象类
{
public:
virtual float GetPerimeter()=0; // 纯虚函数,计算周长
virtual float GetAre()=0; // 纯虚函数,计算面积
};
class Rectangle: public Shape // 矩形类
{
public:
Rectangle (float len,float wid):length(len),width(wid){}
~Rectangle (){}
float GetPerimeter() {return 2*(length width);} // 计算矩形周长
float GetAre() {return length*width;} // 计算矩形面积
private:
float length, width; // 矩形的长和宽
};
class Circle: public Shape // 圆类
{
public: // 在下面编写每个成员函数
private:
float rad; // 圆的半径
};
class Square: public Rectangle // 正方形类
{
public:
Square(float len): Rectangle(len,len){}
~Square(){}
};
A.null
B.有错误,变量i没有初始化
C.1
D.0
A.private
B.protected
C.static
D.public
public class turnString
{
public static void main(String args[])
{
String s=”testonly”;
for(int i=s.length()-1;i>=0;i--) System.out.print(s.charAt(i));
System.out.println();
}
}