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  1. #include<stdio.h>
  2.  
  3. #define ARRAY_LEN  (3)
  4.  
  5. typedef struct _INT_ARRAY {
  6.     int m_data[ARRAY_LEN];
  7. } INT_ARRAY;
  8.  
  9. // set
  10. //  0 : ok
  11. //  1 : param error
  12. //  2 : index error
  13. int INT_ARRAY__Set(INT_ARRAY * p, int index, int d)
  14. {
  15.     if (NULL == p) {
  16.         return 1;
  17.     }
  18.     if (index < 0 || ARRAY_LEN <= index) {
  19.         return 2;
  20.     }
  21.     p->m_data[index] = d;
  22.     return 0;
  23. }
  24.  
  25. // get
  26. //  0 : ok
  27. //  1 : param error
  28. //  2 : index error
  29. int INT_ARRAY__Get(INT_ARRAY * p, int index, int *d)
  30. {
  31.     if (NULL == p || NULL == d) {
  32.         return 1;
  33.     }
  34.     if (index < 0 || ARRAY_LEN <= index) {
  35.         return 2;
  36.     }
  37.     *d = p->m_data[index];
  38.     return 0;
  39. }
  40.  
  41. int main()
  42. {
  43.     INT_ARRAY int_data;
  44.     int i, res, d;
  45.  
  46.     for (i = 0; i < ARRAY_LEN; i++) {
  47.         res = INT_ARRAY__Set(&int_data, i, i);
  48.         if (res) {
  49.             printf("error\n");
  50.             return 1;
  51.         }
  52.     }
  53.     for (i = -1; i < ARRAY_LEN + 1; i++) { // 範囲外アクセス
  54.         printf("int_data.m_data[%2d] = ", i);
  55.         res = INT_ARRAY__Get(&int_data, i, &d);
  56.         if (res) {
  57.             printf("error\n");
  58.         } else {
  59.             printf("%d\n", d);
  60.         }
  61.     }
  62.     return 0;
  63. }
  64.  
Success #stdin #stdout 0s 2292KB
comments (?)
stdin
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Standard input is empty
stdout
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int_data.m_data[-1] = error
int_data.m_data[ 0] = 0
int_data.m_data[ 1] = 1
int_data.m_data[ 2] = 2
int_data.m_data[ 3] = error
https://ideone.com/mUsSdT
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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