#include using namespace std; class Rectangle { private: int x, y; public: Rectangle() { x=0; y=0; } Rectangle(int, int); int getx(); int area(void) { return (x, *y); } };

______________________ //line 20 { return x; }

______________________ //line 25 { x=a; y=b; }

int main() { Rectangle myRect; myRect =Rectangle(20, 30); cout << "get x" << myRect.getx() << endl; cout << "my area" << myRect.area() << endl; //system("pause") return 0; }

1. Fill in the blank in line 20

2. Fill in the blank in line 25

3. How many member does Rectangle have?

4. How many constructors does class Rectangle have?

5. Which constructor(s) is used to initialize object Rectangle?