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  1. //動態配置結構陣列，
  2. //先輸入人數，再依序輸入n個人的姓名、身高、體重
  3. //輸出身高及體重平均
  4. //輸出身高或體重任一項低於平均的人姓名
  5.  
  6. #include <stdio.h>
  7. #include <stdlib.h>
  8.  
  9. struct student{
  10.         char name[21]; 
  11. 		int height, weight;
  12. 	};
  13.  
  14. int main(){
  15. 	int i, n;
  16. 	double t = 10000.00;
  17. 	double s = 10000.00;
  18.     double sum_height, sum_weight, Height_avg, Weight_avg;
  19. 	sum_height = 0;
  20. 	sum_weight = 0;
  21.  
  22. 	printf("請輸入人數: \n"); 
  23.     scanf("%d", &n);
  24.  
  25. 	struct student *a = (struct student *)malloc(sizeof(struct student)*n);
  26.  
  27. 	for (i = 0; i < n; i++){
  28.         printf("請輸入姓名:\n");
  29.         scanf("%s",a[i].name);
  30.         printf("請輸入身高:\n");
  31.         scanf("%d",&a[i].height);
  32.         printf("請輸入體重:\n");
  33.         scanf("%d",&a[i].weight);
  34.     }
  35.  
  36. 	for (i = 0; i < n; i++){
  37.     sum_height += a[i].height;
  38. 	sum_weight += a[i].weight;
  39. 	}
  40.  
  41. 	Height_avg = sum_height / n;
  42. 	Weight_avg = sum_weight / n;
  43.  
  44. 	printf("H_avg: %.2lf\n", Height_avg);
  45. 	printf("W_avg: %.2lf\n", Weight_avg);
  46.  
  47.     for (i = 0; i < n; i++){
  48. 		if(a[i].height < Height_avg || a[i].weight < Weight_avg){
  49. 			printf("%s\n", a[i].name);
  50. 		}
  51. 	}
  52.  
  53. 	free(a);
  54. 	system("pause");
  55. 	return 0;
  56. }
  57.  
  58.  
  59.  
Success #stdin #stdout 0.01s 5268KB
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stdin
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Standard input is empty
stdout
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請輸入人數: 
H_avg: -0.00
W_avg: -0.00
https://ideone.com/XK0MBM
language:
C (gcc 8.3)
created:
13 years ago
visibility:
public

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