Write a class called MyTriangle, which models a triangle with 3 vertices, is
designed as follows. It contains:
1. The MyTriangle class uses three MyPoint instances as the three vertices.
2. Three private instance variables v1, v2, v3 (instances of MyPoint), for
the three vertices.
3. A constructor that constructs a MyTriangle with three points v1=(x1,
y1), v2=(x2, y2), v3=(x3, y3).
4. An overloaded constructor that constructs a MyTriangle given three
instances of MyPoint.
5. A toString() function that returns a string description of the instance in the
format "Triangle @ (x1, y1), (x2, y2), (x3, y3)".
6. A getPerimeter() function that returns the length of the perimeter in
double. You should use the distance() method of MyPoint to compute
the perimeter.
7. Also write a test program (called main.cpp) to test all the functions defined
in the class (example of a triangle: (-2, 1), (1, 3) and (3, -3)).
where are my mistakes?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
|
class MyTriangle
{
MyPoint v1;
MyPoint v2;
MyPoint v3;
public:
MyTriangle(int x1,int y1,int x2,int y2,int x3,int y3)
{
v1=(x1,y1);
v2=(x2, y2);
v3=(x3, y3);
}
MyTriangle(MyPoint v1,MyPoint v2,MyPoint v3){}
string toString();
double getPerimeter();
};
string MyTriangle::toString()
{
cout<<"Triangle"<<"@"<<"("<<x1<<","<<y1<<")"<<","<<"("<<x2<<","<<y2<<")"<<","<<"("<<x3<<","<<y3<<")";
}
double MyTriangle::getPerimeter()
{
return v1.distance(v1.getX(), v1.getY()) + v2.distance(v2.getX(), v2.getY()) + v3.distance(v3.getX(),v3.getY());
}
|