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  1. /* Consider these types */
  2. typedef int arr_unknown[];
  3. typedef int func_unknown();
  4.  
  5. /* And then these */
  6. typedef int arr_4[4];
  7. typedef int func_4(int, int, int, int);
  8.  
  9. /* And finally these */
  10. typedef int arr_2[2];
  11. typedef int func_2(int, int);
  12.  
  13. /* Consider these subjects */
  14. arr_4 some_arr;
  15. func_4 some_func;
  16. double * some_double_ptr;
  17.  
  18. int main(void) {
  19.     /* Consider these intermediaries */
  20.     arr_unknown * a_u;
  21.     func_unknown * f_u;
  22.     void * vp;
  23.  
  24.     /* Three pointers of different types than line 13 */
  25.     arr_2 * a_2;
  26.     func_2 * f_2;
  27.     char * cp;
  28.  
  29.     /*
  30.      * Observe how the intermediaries allow for
  31.      * conversions without casting
  32.      */
  33.     a_2 = a_u = &some_arr;
  34.     f_2 = f_u = some_func;
  35.     cp = vp = some_double_ptr;
  36.  
  37.     return 0;
  38.   }
  39.  
  40. int some_func(int w, int x, int y, int z) {
  41.     return 0;
  42.   }
Success #stdin #stdout 0.01s 1716KB
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https://ideone.com/dj3b6
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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