Pass array value into function: by array, by empty array and by pointer

  
#include <stdio.h>

void f1(int num[5]), f2(int num[]), f3(int *num);

int main(void)
{
  int count[5] = {1, 2, 3, 4, 5};

  f1(count);
  f2(count);
  f3(count);

  return 0;
}

/* parameter specified as array */
void f1(int num[5])
{
  int i;

  for( i = 0; i < 5; i++) 
      printf("%d ", num[ i ]);
}

/* parameter specified as unsized array */
void f2(int num[])
{
  int i;

  for( i = 0; i < 5; i++) 
      printf("%d ", num[ i ]);
}

/* parameter specified as pointer */
void f3(int *num)
{
  int i;

  for(i = 0; i < 5; i++) 
      printf("%d ", num[ i ]);
}

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Pass array value into function: by array, by empty array and by pointer : Function Parameters « Function « C / ANSI-C

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