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  1. #include <stdio.h>
  2. #include <math.h>
  3. typedef struct{
  4. 	int id;
  5. 	int height;
  6. 	int weight;
  7. }Body;
  8. int main(void) {
  9.  Body data[]={{1,165,60},
  10.               {2,170,68},
  11.               {3,160,50},
  12.               {4,180,75},
  13.               {5,175,80},
  14.               };
  15.     int n=sizeof(data)/sizeof(data[0]);
  16.     for(int i=0;i<n;i++){
  17.     	for (int j=0;j<n-1;j++){
  18.     		if(data[j].height>data[j+1].height){
  19.     		Body c;
  20.     		c=data[j];
  21.     		data[j]=data[j+1];
  22.     		data[j+1]=c;
  23.  
  24.     	}
  25.     }
  26.     }
  27.  
  28.  printf("身長順\n");
  29.  for (int i=0;i<n;i++){
  30.  	printf("%d,%d,%d\n",data[i].id,data[i].height,data[i].weight);
  31.  }
  32.  
  33.  double ave=0;
  34. double  stb=0;
  35.  ave=(data[n-1].height+data[n-2].height+data[n-3].height)/3.0;
  36.  printf("平均:%.1lf\n",ave); 
  37.  
  38. 	double t=0;	
  39. for (int d=0;d<3;d++){
  40.  
  41. 	t+=(data[n-1-d].height-ave)*(data[n-1-d].height-ave);
  42. }
  43.   printf("標準偏差:%.1lf",sqrt(t/3.0));
  44. }
  45.  
Success #stdin #stdout 0s 5320KB
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stdin
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Standard input is empty
stdout
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身長順
3,160,50
1,165,60
2,170,68
5,175,80
4,180,75
平均:175.0
標準偏差:4.1
https://ideone.com/chV3SQ
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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