C++ 程序展示线和点的对偶变换
c++server side programmingprogramming更新于 2024/11/4 5:51:00
这是一个 C++ 程序，用于展示线和点的对偶变换。因此它可以有两种情况 −
情况 1: 点 (a, b) 变换为线 (y = ax − b)。
情况 2: 线 D(y = cx + d) 变换为点 D’(c, −d)。
函数和伪代码
Function LineTransformation(double c, double d)
Print C: (d / c) D: (d * -1)
Function PointTransformation(double x, double y)
Print a = (-1 * y / x) b = (-1 * y)
示例
#include <iostream>
#include <time.h>
#include <stdlib.h>
using namespace std;
void LineTransformation(double c, double d) {
cout << "C: " << (d / c) << ", D: " << (d * -1);
}
void PointTransformation(double x, double y) {
cout << "y=" << (-1 * y / x) << "x +" << (-1 * y);
}
int main(int argc, char **argv) {
cout << "\n1. Line Transformation\n2. Point Transformation";
int c;
cin >> c;
switch (c) {
case 1:
cout << "Enter the coefficients of line y=ax-b:";
double a, b;
cin >> a >> b;
LineTransformation(a, b);
break;
case 2:
cout << "Enter the coordinate of point <a, b>";
double x, y;
cin >> x >> y;
PointTransformation(x, y);
break;
default:
break;
}
}
输出
1. Line Transformation 2. Point Transformation 1 Enter the coefficients of line y=ax-b: 1 2 C: 2, D: -2 1. Line Transformation 2. Point Transformation 2 Enter the coordinate of point <a, b> 1 2 y=-2x +-2
