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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() {
  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.     for (int i = 0; i < 4; i++) {
  20.         for (int j = 0; j < 4 - i; j++) {
  21.             if (data[j].height > data[j + 1].height) {
  22.                 Body temp = data[j];
  23.                 data[j] = data[j + 1];
  24.                 data[j + 1] = temp;
  25.             }
  26.         }
  27.     }
  28.  
  29.     printf("身長昇順:\n");
  30.     for (int i = 0; i < 5; i++) {
  31.         printf("ID: %d, Height: %.1f cm, Weight: %.1f kg\n", data[i].id, data[i].height, data[i].weight);
  32.     }
  33.  
  34.     double sum = 0.0;
  35.     for (int i = 2; i < 5; i++) {
  36.         sum += data[i].height;
  37.     }
  38.     double ave = sum / 3;
  39.  
  40.     double variance = 0.0;
  41.     for (int i = 2; i < 5; i++) {
  42.         variance += pow(data[i].height - ave, 2);
  43.     }
  44.     double std = sqrt(variance / 3);
  45.  
  46.     printf("\n上位3名の身長平均: %.1f cm\n", ave);
  47.     printf("標準偏差: %.1f cm\n", std);
  48.  
  49.     return 0;
  50. }
Success #stdin #stdout 0s 5288KB
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stdin
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Standard input is empty
stdout
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身長昇順:
ID: 3, Height: 160.0 cm, Weight: 50.0 kg
ID: 1, Height: 165.0 cm, Weight: 60.0 kg
ID: 2, Height: 170.0 cm, Weight: 68.0 kg
ID: 5, Height: 175.0 cm, Weight: 80.0 kg
ID: 4, Height: 180.0 cm, Weight: 75.0 kg

上位3名の身長平均: 175.0 cm
標準偏差: 4.1 cm
https://ideone.com/ydMdR0
language:
C (gcc 8.3)
created:
17 hours ago
visibility:
public

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