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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. Point scan_point(void);
  10. double area_of(Point p1, Point p2);
  11. double circumference_of(Point p1, Point p2);
  12.  
  13. int main(void) {
  14. 	Point p1;
  15. 	Point p2;
  16. 	p1=scan_point();
  17. 	p2=scan_point();
  18. 	double menmen=area_of(p1,p2);
  19. 	double shushu=circumference_of(p1,p2);
  20.  
  21. 	printf("左上隅と右下隅の座標を入力してください。\n");
  22. 	printf("座標1(%.2f,%.2f)\n",p1.x,p1.y);
  23. 	printf("座標2(%.2f,%.2f)\n",p2.x,p2.y);
  24. 	printf("面積:%.2f\n",menmen);
  25. 	printf("周囲の長さ:%.2f\n",shushu);
  26. 	return 0;
  27. }
  28.  
  29. 	Point scan_point(void){
  30. 		Point a;
  31. 		scanf("%lf",&a.x);	
  32. 		scanf("%lf",&a.y);	
  33. 		return a;
  34. 	}
  35.  
  36. 	double area_of(Point p1, Point p2){
  37. 		double menmen;
  38. 		menmen=fabs(p1.x-p2.x)*fabs(p1.y-p2.y);
  39. 		return menmen;
  40. 		}
  41.  
  42. 	double circumference_of(Point p1, Point p2){
  43. 		double shushu;
  44. 		shushu=2*fabs(p1.x-p2.x)+2*fabs(p1.y-p2.y);
  45. 		return shushu;
  46. 	}
  47.  
  48.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin 
2
2
5
5
stdout 
左上隅と右下隅の座標を入力してください。
座標1(2.00,2.00)
座標2(5.00,5.00)
面積:9.00
周囲の長さ:12.00
https://ideone.com/iB3Phw
language:
C (gcc 8.3)
created:
13 days ago
visibility:
public

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