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  1. #include <stdio.h>
  2.  
  3. typedef struct{
  4. 	int a[5];
  5. }Data;
  6.  
  7. void check_array(Data *data);
  8.  
  9. int main(void) {
  10. 	Data data={{0,1,2,3,4}};
  11.  
  12. 	printf("before\n");
  13. 	for(int i=0;i<5;i++){
  14. 		printf("%2d",data.a[i]);
  15. 	}
  16. 	printf("\n");
  17.  
  18. 	check_array(&data);
  19.  
  20. 	printf("after\n");
  21. 	for(int i=0;i<5;i++){
  22. 		printf("%2d",data.a[i]);//%2dは空白を2個実現させ右詰で文字入力する
  23. 	}
  24. 	printf("\n");
  25. 	return 0;
  26. }
  27. void check_array(Data *data) {
  28.     data->a[4] = 99; // 例：最初の要素を99に変えてみる
  29. }
  30.  
Success #stdin #stdout 0.01s 5324KB
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stdin
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Standard input is empty
stdout
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before
 0 1 2 3 4
after
 0 1 2 399
https://ideone.com/lGXPcY
プロ演III　第6回授業　演習課題3
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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