92 lines
1.1 KiB
C++
92 lines
1.1 KiB
C++
#include<iostream>
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#include<string>
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#include<sstream>
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#include<math.h>
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class Point
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{
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public:
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double X, Y;
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void setX(double x)
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{
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X = x;
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}
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void setY(double y)
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{
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Y = y;
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}
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Point(double x = 0, double y = 0)
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{
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X = x;
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Y = y;
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}
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void print()
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{
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std::cout << "(" << X << "," << Y << ")";
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}
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};
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class Line
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{
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public:
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Point P, Q;
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double b, m;
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void setPoint(bool p, Point point)
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{
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if(p==0)
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{
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Q.setX(point.X);
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Q.setY(point.Y);
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}
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else
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{
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P.setX(point.X);
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P.setY(point.Y);
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}
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}
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void distance()
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{
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std::cout << sqrt((P.X-Q.X)*(P.X-Q.X)+(P.Y-Q.Y)*(P.Y-Q.Y));
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}
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void gradient()
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{
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m = (P.Y-Q.Y)/(P.X-Q.X);
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}
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void nullPointX()
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{
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b = (-P.X)*(P.Y-Q.Y)/(P.X-Q.X)+(P.Y);
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std::cout << b;
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}
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void nullPointY()
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{
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std::cout << (P.X)*(P.Y-Q.Y)/(P.X-Q.X)/((P.Y-Q.Y)/(P.X-Q.X));
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}
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void print()
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{
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gradient();
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std::cout << m <<"*x + ";
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nullPointX();
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}
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};
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int main()
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{
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Point P(3,5), Q(5,3);
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Line g;
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g.setPoint(0, Q);
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g.setPoint(1, P);
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g.print();
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getchar();
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}
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