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  1. #include  <stdio.h>
  2. #include  <string.h>
  3.  
  4. #define  NUMBER   5 /* 学生の人数 */
  5.  
  6. typedef struct {
  7.   char   name[20];  /* 名前 */
  8.   int    height;    /* 身長 */
  9.   float  weight;    /* 体重 */
  10.   long   schols;    /* 奨学金 */
  11. } student;
  12.  
  13. /*--- xおよびyが指す学生を交換 ---*/
  14. void swap(student *x, student *y)
  15. {
  16.   student  temp = *x;
  17.   *x = *y;
  18.   *y = temp;
  19. }
  20.  
  21. /*--- 配列dataの先頭n個の要素を名前の昇順にソート ---*/
  22. void sort(student data[], int n)
  23. {
  24.   int  k = n - 1;
  25.   while (k >= 0) {
  26.     int  i, j;
  27.     for (i = 1, j = -1; i <= k; i++)
  28.       /*       if (data[i - 1].height > data[i].height) { */
  29.       if (strcmp(data[i - 1].name , data[i].name)>0) {
  30.         j = i - 1;
  31.         swap(&data[i], &data[j]);
  32.       }
  33.     k = j;
  34.   }
  35. }
  36.  
  37. int main(void)
  38. {
  39.   int  i;
  40.   student std[] = {
  41.     { "Sato",   178, 61.0, 80000},  /* 佐藤宏史君 */
  42.     { "Sanaka", 175, 60.5, 70000},  /* 佐中俊哉君 */
  43.     { "Takao",  173, 80.0, 0},    /* 高尾健司君 */
  44.     { "Mike",   165, 72.0, 70000},  /* 平木Mike君 */
  45.     { "Masaki", 179, 77.5, 70000},  /* 真崎宏孝君 */
  46.   };
  47.  
  48.   sort(std, NUMBER);
  49.  
  50.   puts("５人の学生を名前の昇順にソート");
  51.   puts("-----------------------------");
  52.   for (i = 0; i < NUMBER; i++)
  53.     printf("%-8s %6d%6.1f%7ld\n",
  54.            std[i].name,  std[i].height, std[i].weight, std[i].schols);
  55.   puts("-----------------------------");
  56.  
  57.   return (0);
  58. }
Success #stdin #stdout 0.01s 1720KB
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５人の学生を名前の昇順にソート
-----------------------------
Masaki      179  77.5  70000
Mike        165  72.0  70000
Sanaka      175  60.5  70000
Sato        178  61.0  80000
Takao       173  80.0      0
-----------------------------
https://ideone.com/BiWbq
language:
C (gcc 8.3)
created:
12 years ago
visibility:
secret

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