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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.  
  17. 		p1=scan_point();
  18. 		p2=scan_point();
  19.  
  20. 		double area,circumference;
  21.  
  22. 		area=area_of(p1, p2);
  23. 		circumference=circumference_of(p1, p2);
  24.  
  25. 		printf("area=%.2f circumference=%.2f",area,circumference);
  26.  
  27. 	return 0;
  28. }
  29.  
  30. Point scan_point(void){
  31.  
  32. 	Point p;
  33.  
  34. 	scanf("%lf",&p.X);
  35. 	scanf("%lf",&p.Y);
  36.  
  37. 	return p;
  38. }
  39.  
  40. double area_of(Point p1, Point p2){
  41. 	return fabs(p1.X-p2.X)*fabs(p1.Y-p2.Y);
  42. }
  43.  
  44. double circumference_of(Point p1, Point p2){
  45. 	return fabs(p1.X-p2.X)*2+fabs(p1.Y-p2.Y)*2;
  46. }
  47.  
  48.  
Success #stdin #stdout 0s 5328KB
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stdin
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3.21
3.65
8.36
9.34
stdout
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area=29.30 circumference=21.68
https://ideone.com/mphhbC
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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