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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. typedef struct{
  5. 	int id;
  6. 	double height;
  7. 	double weight;
  8. }Body;
  9.  
  10. int main(void) {
  11.  
  12. 	Body data[5] = {
  13. 		{1,165,60},
  14. 		{2,170,68},
  15. 		{3,160,50},
  16. 		{4,180,75},
  17. 		{5,175,80}
  18. 	};
  19.  
  20. 	Body temp;
  21. 	double avg = 0,std = 0;
  22. 	int i,j;
  23. 	//並び替え
  24. 	for(i = 0;i < 4; i ++){
  25. 		for(j = 0;j < 4 - i;j ++){
  26. 			if(data[j].height > data[j + 1].height){
  27. 				temp = data[j];
  28. 				data[j] = data[j + 1];
  29. 				data[j + 1] = temp;
  30. 			}
  31. 		}
  32. 	}
  33. 	//並び替え表示
  34. 	for(i = 0;i < 5;i ++){
  35. 		printf("%d,%lf,%lf\n",data[i].id,data[i].height,data[i].weight);
  36. 	}
  37. 	//平均
  38. 	for(i = 2;i < 5;i ++){
  39. 		avg += data[i].height;
  40. 	}
  41. 	avg = avg / 3;
  42. 	//標準偏差
  43. 	for(i = 2;i < 5;i ++){
  44. 		std += (data[i].height - avg) * (data[i].height);
  45. 	}
  46. 	std = sqrt(std / 3);
  47.  
  48. 	printf("平均：%lf\n",avg);
  49. 	printf("標準偏差：%lf\n",std);
  50.  
  51. 	return 0;
  52. }
Success #stdin #stdout 0s 5316KB
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stdin
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Standard input is empty
stdout
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3,160.000000,50.000000
1,165.000000,60.000000
2,170.000000,68.000000
5,175.000000,80.000000
4,180.000000,75.000000
平均：175.000000
標準偏差：4.082483
https://ideone.com/FV3Bes
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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