RicardasSim

int array address, sizeof

Jul 6th, 2019
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C 0.83 KB | None | 0 0
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4.  
  5.  
  6. int main()
  7. {
  8.  
  9.     int arr[10]={0};
  10.    
  11.     printf("Address:\n\n");
  12.    
  13.     printf("arr: %p\n", (void*) arr);
  14.     printf("&arr: %p\n", (void*) &arr);
  15.     printf("&arr[0]: %p\n", (void*) &arr[0]);
  16.     printf("&arr[1]: %p\n", (void*) &arr[1]);
  17.    
  18.     printf("\nsizeof:\n\n");
  19.    
  20.     printf("arr: %zu\n", sizeof arr);
  21.     printf("&arr: %zu\n", sizeof &arr);
  22.     printf("&arr[0]: %zu\n", sizeof &arr[0]);
  23.     printf("&arr[1]: %zu\n", sizeof &arr[1]);
  24.     printf("*arr: %zu\n", sizeof *arr);
  25.     printf("arr[0]: %zu\n", sizeof arr[0]);
  26.    
  27.     return 0;
  28. }
  29.  
  30. /*
  31. output:
  32.  
  33. Address:
  34.  
  35. arr: 0x7fffe67bf280
  36. &arr: 0x7fffe67bf280
  37. &arr[0]: 0x7fffe67bf280
  38. &arr[1]: 0x7fffe67bf284
  39.  
  40. sizeof:
  41.  
  42. arr: 40
  43. &arr: 8
  44. &arr[0]: 8
  45. &arr[1]: 8
  46. *arr: 4
  47. arr[0]: 4
  48.  
  49.  
  50. */
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