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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.     Body data[5] = {
  12.         {1, 165, 60},
  13.         {2, 170, 68},
  14.         {3, 160, 50},
  15.         {4, 180, 75},
  16.         {5, 175, 80}
  17.     };
  18.  
  19.     int i, j;
  20.     Body temp;
  21.  
  22.     for (i = 0; i < 5 - 1; i++) {
  23.         for (j = 0; j < 5 - 1 - i; j++) {
  24.             if (data[j].height > data[j + 1].height) {
  25.                 temp = data[j];
  26.                 data[j] = data[j + 1];
  27.                 data[j + 1] = temp;
  28.             }
  29.         }
  30.     }
  31.     printf("ID  Height  Weight\n");
  32.     for (i = 0; i < 5; i++) {
  33.         printf("%2d  %6.1f  %6.1f\n", data[i].id, data[i].height, data[i].weight);
  34.     }
  35.      double ave = 0.0, std = 0.0;
  36.     for (i = 2; i < 5; i++) {
  37.         ave += data[i].height;
  38.     }
  39.     ave /= 3.0;
  40.  
  41.     for (i = 2; i < 5; i++) {
  42.         std += pow(data[i].height - ave, 2);
  43.     }
  44.     std = sqrt(std / 3.0);
  45.  
  46.     printf("身長が高い3名の平均値(ave): %.1f cm\n", ave);
  47.     printf("身長が高い3名の標準偏差(std): %.1f cm\n", std);
  48.  
  49.     return 0;
  50. }
  51.  
Success #stdin #stdout 0s 5320KB
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stdin
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Standard input is empty
stdout
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ID  Height  Weight
 3   160.0    50.0
 1   165.0    60.0
 2   170.0    68.0
 5   175.0    80.0
 4   180.0    75.0
身長が高い3名の平均値(ave): 175.0 cm
身長が高い3名の標準偏差(std): 4.1 cm
https://ideone.com/sjghAF
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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