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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. typedef struct {
  5.     double x;
  6.     double y;
  7. } Point;
  8.  
  9.  
  10. Point scan_point(void) {
  11.     Point p;
  12.     scanf("%lf %lf", &p.x, &p.y);
  13.     return p;
  14. }
  15.  
  16. double area_of(Point p1, Point p2) {
  17.     double width = fabs(p2.x - p1.x);
  18.     double height = fabs(p2.y - p1.y);
  19.     return width * height;
  20. }
  21.  
  22.  
  23. double circumference_of(Point p1, Point p2) {
  24.     double width = fabs(p2.x - p1.x);
  25.     double height = fabs(p2.y - p1.y);
  26.     return 2 * (width + height);
  27. }
  28.  
  29. int main(void) {
  30.     Point p1, p2;
  31.     printf("左上隅と右下隅の座標を入力してください。\n");
  32.  
  33.     printf("座標1：");
  34.     p1 = scan_point();
  35.  
  36.     printf("座標2：");
  37.     p2 = scan_point();
  38.  
  39.     double area = area_of(p1, p2);
  40.     double circum = circumference_of(p1, p2);
  41.  
  42.     printf("面積：%.2f\n", area);
  43.     printf("周囲の長さ：%.2f\n", circum);
  44.  
  45.     return 0;
  46. }
  47.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
0 0 1 1
stdout 
左上隅と右下隅の座標を入力してください。
座標1：座標2：面積：1.00
周囲の長さ：4.00
https://ideone.com/aUVSim
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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