使用C语言获取四个坐标点
```c
include include include int main() { int x1, y1, x2, y2, x3, y3, x4, y4; float a, b, c, d, p1, p2, p3, p4, s1, s2, s3, s4; printf("输入A点坐标:"); scanf("%d,%d", &x1, &y1); printf("输入B点坐标:"); scanf("%d,%d", &x2, &y2); printf("输入C点坐标:"); scanf("%d,%d", &x3, &y3); printf("输入D点坐标:"); scanf("%d,%d", &x4, &y4); a = sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1)); b = sqrt((x3 - x2) * (x3 - x2) + (y3 - y2) * (y3 - y2)); c = sqrt((x4 - x3) * (x4 - x3) + (y4 - y3) * (y4 - y3)); d = sqrt((x1 - x4) * (x1 - x4) + (y1 - y4) * (y1 - y4)); p1 = 0.5 * (a + b + c); s1 = sqrt(p1 * (p1 - a) * (p1 - b) * (p1 - c)); p2 = 0.5 * (b + c + d); s2 = sqrt(p2 * (p2 - b) * (p2 - c) * (p2 - d)); p3 = 0.5 * (c + d + a); s3 = sqrt(p3 * (p3 - c) * (p3 - d) * (p3 - a)); p4 = 0.5 * (d + a + b); printf("A到B的距离: %.2f\n", a); printf("B到C的距离: %.2f\n", b); printf("C到D的距离: %.2f\n", c); printf("D到A的距离: %.2f\n", d); printf("半周长: %.2f\n", p1); printf("半周长: %.2f\n", p2); printf("半周长: %.2f\n", p3); printf("半周长: %.2f\n", p4); printf("面积: %.2f\n", s1 + s2 + s3 + s4); return 0; } ``` 使用Python获取和处理四个坐标点 ```python import matplotlib.pyplot as plt 打开文件 file = open('coordinates.txt', 'r') 读取坐标点 x1, y1 = map(int, file.readline().split(',')) x2, y2 = map(int, file.readline().split(',')) x3, y3 = map(int, file.readline().split(',')) x4, y4 = map(int, file.readline().split(',')) 绘制矩形 plt.plot([x1, x2, x3, x4], [y1, y2, y3, y4], 'b-') plt.gca().set_aspect('equal', adjustable='box') plt.title('Rectangle with vertices (%d, %d), (%d, %d), (%d, %d), (%d, %d)' % (x1, y1, x2, y2, x3, y3, x4, y4)) plt.xlabel('X') plt.ylabel('Y') plt.show() ``` 使用Python获取和处理四个坐标点(数控编程)