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  1. #include <stdio.h>
  2.  
  3. typedef struct{
  4. 	int id;    //学籍番号
  5. 	int mth; //数学
  6. 	int eng; //英語
  7. 	int phy; //物理
  8. 	int avg; //平均点
  9. } Score; 
  10.  
  11. void calcAverage(Score s[], int n);
  12. void showScore(Score s[], int n );
  13. void swap(Score *x, Score *y);
  14.  
  15. int main(void) {
  16. 	Score s[] = {
  17. 		{ 1001,  65,  80,  95, 0},
  18. 		{ 1002,  70,  68,  75, 0},
  19. 		{ 1003,  60, 100,  83, 0},
  20. 		{ 1004, 100,  55,  74, 0},
  21. 		{ 1005,  90,  85, 100, 0},
  22. 	};
  23. 	int i,j, n=5;
  24.  
  25. 	calcAverage(s, n);
  26. 	showScore(s, n);
  27.  
  28. 	for(i=0;i<n; i++)
  29. 		for(j=n-1; j>i; j--)
  30. 			if( s[j-1].avg>s[j].avg )
  31. 				swap( &s[j-1], &s[j] );
  32.  
  33. 	printf( "\nAfter sorting\n" );
  34. 	showScore(s, n);
  35.  
  36. 	return 0;
  37. }
  38.  
  39. void calcAverage(Score s[], int n){
  40. 	int i;
  41.  
  42. 	for( i=0; i<n; i++ )
  43. 		s[i].avg = (s[i].mth + s[i].eng + s[i].phy)/3;
  44. }
  45.  
  46. void showScore(Score s[], int n ){
  47. 	int i;
  48. 	for(i=0; i<n; i++ )
  49. 		printf( "[%5d] %4d %4d %4d %4d\n", s[i].id, s[i].mth, s[i].eng, s[i].phy, s[i].avg );
  50. }
  51.  
  52. void swap( Score *x, Score *y ){
  53. 	Score tmp=*x;
  54. 	*x = *y;
  55. 	*y = tmp;
  56. } 
  57.  
Success #stdin #stdout 0s 5472KB
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stdin
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Standard input is empty
stdout
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[ 1001]   65   80   95   80
[ 1002]   70   68   75   71
[ 1003]   60  100   83   81
[ 1004]  100   55   74   76
[ 1005]   90   85  100   91

After sorting
[ 1002]   70   68   75   71
[ 1004]  100   55   74   76
[ 1001]   65   80   95   80
[ 1003]   60  100   83   81
[ 1005]   90   85  100   91
https://ideone.com/KL1XCK
Ex.6-2
language:
C (gcc 8.3)
created:
1 year ago
visibility:
public

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