fork(1) download 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. #define ARRAYSIZE(arr) ((sizeof(arr) != sizeof(&arr[0])) ? \
  5.                        (sizeof(arr)/sizeof(*arr)) : \
  6.                        -1+0*fprintf(stderr, "\n\n** pointer in ARRAYSIZE !! **\n\n"))
  7.  
  8. int main(void) {
  9.  
  10. 	int test[12];
  11. 	int* test2 = malloc(12*sizeof(int));
  12.  
  13. 	printf("size = %d\n", ARRAYSIZE(test));
  14. 	printf("size = %d\n", ARRAYSIZE(test2));
  15.  
  16. 	free(test2);
  17.  
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout #stderr 0s 2248KB
comments (?)
stdin 
Standard input is empty
stdout 
size = 12
size = -1
stderr 

** pointer in ARRAYSIZE !! **
https://ideone.com/OysRxe
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!