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  1. #include <stdio.h>
  2. #define N 4
  3.  
  4. int main(void)
  5. {
  6.   int a[N][2];
  7.   int (*b[N])[2];
  8.   int (*c)[2];
  9.   int **d;
  10.   int (*e)[2];
  11.   int i;
  12.  
  13.   for (i = 0; i < N; i++) {
  14.     a[i][0] = 2 * i + 1;
  15.     a[i][1] = 2 * i + 2;
  16.   }
  17.   for (i = 0; i < N; i++)
  18.     printf("%d, %d\n", a[i][0], a[i][1]);
  19.   printf("\n");
  20.  
  21.   for (i = 0; i < N; i++) {
  22.     b[i] = &a[i];
  23.   }
  24.   printf("b = %08X\n", b);
  25.   for (i = 0; i < N; i++)
  26.     printf("%d, %d\n", (*b[i])[0], (*b[i])[1]);
  27.   printf("\n");
  28.  
  29.   c = a;
  30.   for (i = 0; i < N; i++)
  31.     printf("%d, %d\n", c[i][0], c[i][1]);
  32.   printf("\n");
  33.  
  34.   d = (int **)b;
  35.   printf("d = %08X\n", d);
  36.   for (i = 0; i < N; i++)
  37.     printf("%d, %d\n", d[i][0], d[i][1]);
  38.   printf("\n");
  39.  
  40.   e = (int (*)[2])a;
  41.   printf("e = %08X\n", e);
  42.   for (i = 0; i < N; i++, e++)
  43.     printf("%d, %d\n", e[0][0], e[0][1]);
  44.  
  45.   return 0;
  46. }
  47.  
Success #stdin #stdout 0s 1788KB
comments (?)
stdin
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Standard input is empty
stdout
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1, 2
3, 4
5, 6
7, 8

b = BFD453A0
1, 2
3, 4
5, 6
7, 8

1, 2
3, 4
5, 6
7, 8

d = BFD453A0
1, 2
3, 4
5, 6
7, 8

e = BFD453B0
1, 2
3, 4
5, 6
7, 8
https://ideone.com/CrelPU
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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