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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. #include<stdio.h> 
  5. void fun(int arr[])   
  6. { 
  7.   int i;    
  8.  
  9.   /* sizeof should not be used here to get number  
  10.     of elements in array*/
  11.   int arr_size = sizeof(arr)/sizeof(arr[0]); /* incorrect use of sizeof*/
  12.  
  13.   for (i = 0; i < arr_size; i++)  
  14.   {   
  15.     arr[i] = i;  /*executed only once */
  16.   } 
  17. } 
  18.  
  19. int main() 
  20. { 
  21.   int i;   
  22.   int arr[4] = {0, 0 ,0, 0}; 
  23.   fun(arr); 
  24.     std::cout<<sizeof(arr[0]);
  25.   /* use of sizeof is fine here*/
  26.   for(i = 0; i < sizeof(arr)/sizeof(arr[0]); i++) 
  27.     printf(" %d " ,arr[i]); 
  28.  
  29.   getchar();   
  30.   return 0; 
  31. }
Success #stdin #stdout 0s 4512KB
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Standard input is empty
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4 0  1  0  0
https://ideone.com/nFvmwM
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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